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                              CENTRAL BANCORP, INC.
- --------------------------------------------------------------------------------
                (Name of Registrant as Specified in Its Charter)


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    (Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)

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                           EXPLANATORY NOTE


     The  following  materials  were  used in a  presentation  to  Institutional
Shareholder Service by the Company on September 10, 2002.


NOTE ON FORWARD-LOOKING STATEMENTS

     When used in this presentation,  the words or phrases "will likely result,"
"are expected to," "will continue," "is anticipated,"  "estimate,"  "project" or
similar expressions are intended to identify "forward-looking statements" within
the meaning of the Private Securities Litigation Reform Act of 1995. The Company
cautions  readers  not to  place  undue  reliance  on any  such  forward-looking
statements,  which speak only as of the date made,  and to advise  readers  that
various factors, including changes in regional and national economic conditions,
unfavorable judicial decisions, substantial changes in levels of market interest
rates,  credit  and  other  risks  of  lending  and  investment  activities  and
competitive  and  regulatory  factors,  could  affect  the  Company's  financial
performance  and could cause the Company's  actual results for future periods to
differ materially from those anticipated or projected.

     The Company does not undertake and specifically disclaims any obligation to
update any  forward-looking  statements to reflect  occurrence of anticipated or
unanticipated events or circumstances after the date of such statements.





                             CENTRAL BANCORP, INC.
                           SOMERVILLE, MASSACHUSETTS


                              SPECIAL PRESENTATION

                                  PRESENTED TO
                       INSTITUTIONAL SHAREHOLDER SERVICES
                               ROCKVILLE, MARYLAND

                               SEPTEMBER 10, 2002

                                                                 GENERAL PROFILE

================================================================================

o    Central  Bancorp,  Inc. is the publicly  traded holding company for Central
     Bank.

o    Central Bank is a Massachusetts-chartered co-operative bank.

o    Headquartered in Somerville, Massachusetts.

o    Operates eight  full-service  banking offices in suburban Boston.

                                                                               2

                                                           HISTORICAL BACKGROUND

================================================================================

o    Central Co-Operative Bank was founded in 1915.

o    Central grew through mergers with six other co-operative banks between 1970
     and 1982.

o    Central  become a public company in October 1986 by converting to a capital
     stock bank.

o    Central acquired Metro Bancorp, Inc. of Woburn in 1994.

o    Central  formed parent  holding  company in 1999 to facilitate  operational
     flexibility  and stock  repurchases.

                                                                               3

                                                              FINANCIAL OVERVIEW

================================================================================

o    Total assets of $473 million as of June 30, 2002.

o    Total loans of $363 million.

o    Total deposits of $271 million.

o    Stockholders' equity of $39 million or 8.26% of total assets.

o    Loan loss allowance of $3.1 million or 0.91% of total loans.

o    Non-performing  loans  amount  to  zero  and no  real  estate  foreclosures
     incurred in past two years.

                                                                               4

                                                               COMMON STOCK DATA
================================================================================

o    Current shares outstanding total 1,659,933.

o    Traded on Nasdaq National Market under "CEBK" symbol.

o    Closing market price of $31.91 on September 9, 2002.

o    Total market capitalization of $53 million.

o    Book  value per share of $23.93 and  tangible  book value of $22.56 at June
     30, 2002.

o    Annualized cash dividend of $0.40 per share.

                                                                               5

                                                                   BOARD PROFILE
================================================================================


o    Composed of eight  directors:  three directors up for nomination at current
     annual meeting and five continuing directors.

o    The  majority  (six of eight  directors)  of the Board  consists of outside
     independent directors with strong local ties.

o    Key Board  committees  (Nominating  and  Finance/Audit)  consist  solely of
     outside independent directors.

                                                                               6

                                              PRINCIPAL OWNERSHIP CONCENTRATIONS

================================================================================

o    John Doherty and Joseph Doherty                               12.18%

o    Central Bank ESOP                                             12.18%

o    Tontine Financial Partners                                     9.72%

o    PL Capital Group                                               9.36%

o    Dimensional Fund Advisors                                      6.17%


                                                                               7

                                                               CORPORATE MISSION
================================================================================

o    Enhance shareholder value

o    Meet financial needs of customers.

o    Provide high quality services and products

o    Maintain competitive position in local marketplace.

o    Remain a viable community banking organization.

o    Employ competent and efficient personnel.

                                                                               8

                                                            OPERATING STRATEGIES

================================================================================

o    Improve core earnings profitability.

o    Increase return on equity.

o    Maintain excellent asset quality.

o    Manage capital resources effectively.

o    Explore expansion opportunities.

o    Control interest rate risk.

                                                                               9


                                                             STEADY ASSET GROWTH

================================================================================


     Bar graph  appears  here  showing the Bank's  ending  assets from
     fiscal year 1997 through  fiscal year 2002 with arrow  labeled 8%
     compound annual growth. Approximate plot points are as follows:

               Year End                            Assets
               --------                         -------------
                                                (in millions)
               FY 97                               $321
               FY 98                               $375
               FY 99                               $365
               FY 00                               $410
               FY 01                               $449
               FY 02                               $468

                                                                              10


                                                              STRONG LOAN GROWTH

================================================================================


     Bar graph appears here  indicating 10% compound  annual growth in
     the Bank's loans for fiscal year 1997  through  fiscal year 2002.
     Approximate plot points are as follows:


               FY               Loans
               --               -----
                             (in millions)

               97               $235
               98               $282
               99               $280
               00               $320
               01               $346
               02               $372

                                                                              11


                                                     ATTRACTIVE BRANCH FRANCHISE

================================================================================


     [Bar graph appears here indicating the dollar amounts of deposits
     (in  millions) of the Bank's  branches:  Malden,  Chestnut  Hill,
     Burlington, Woburn (Lexington Street), Arlington, Melrose, Woburn
     (Main Street), Somerville. Branches are ranked in ascending order
     of dollar  amount in deposits held at the branch from $10 million
     to approximately $60 million.]



                           (Data as of July 31, 2002)
                                                                              12


                                                    CHANGE IN LOAN PORTFOLIO MIX

================================================================================


[Pie Chart appears here, dated March 31, 1997.  The circle is divided according
to the following plot points:

Loan Category                                      Percentage (%)
- -------------                                      --------------

Residential Real Estate                                75%
Construction                                            1
Commercial Business                                     1
Home Equity Line of Credit/2nd Mortgage                 4
Commercial Real Estate                                 18
Consumer                                                1   ]


[Pie Chart appears here, dated March 31, 2002.  The circle is divided according
to the following plot points:

Loan Category                                      Percentage (%)
- -------------                                      --------------

Residential Real Estate                                66%
Construction                                            5
Commercial Business                                     2
Home Equity Line of Credit/2nd Mortgage                 3
Commercial Real Estate                                 23
Consumer                                                1   ]

Graphic appears at bottom of this graph stating:  58% of residential mortgages
are fixed-rate loans and 42% are adjustable-rate loans.

                                                                              13


                                                               IMPROVED CORE EPS

================================================================================



Bar chart appears here indicating 16% compound annual growth of core earnings
per share.  Plot points are as follows.

          Fiscal Year                        Core EPS
          -----------                        --------

             1999                              $1.15
             2000                               1.54
             2001                               1.55
             2002                               1.78


          Note: Core earnings are defined by SNL Financial as earnings
          before  extraordinary  items less the  after-tax  portion of
          non-recurring  items and gain on sale of items  except loans
          at an assumed tax rate of 35%.

                                                                              14


                                                   OUTSTANDING JUNE 2002 QUARTER

================================================================================

o    Net income  increased  94% to $1.0  million  for June 2002  quarter  versus
     $530,000 for June 2001 quarter.

o    Actual EPS almost  doubled  to $0.63 for June 2002  quarter  from $0.32 for
     June 2001 quarter.

o    Core  deposits  (non-CD   accounts)  grew  $10.2  million  during  quarter,
     reflecting growth of 27% annualized.

o    Cost of funds declined to 3.31% compared to 4.57% for quarter one year ago.

o    No non-performing loans reported at June 30, 2002.

                                                                              15



                      ACTUAL QUARTERLY EPS UP DRAMATICALLY

================================================================================


     Bar graph  appers here  indicating  earnings per share growth for
     each of the quarters of fiscal year 2002 and the first quarter of
     fiscal year 2003. Plot points appear below:

              Fiscal Quarter                    Earnings Per Share
              --------------                    ------------------

              First quarter 2002                    $0.32
              Second quarter 2002                    0.34
              Third quarter 2002                     0.57
              Fourth quarter 2002                    0.50
              First quarter 2003                     0.63

                                                                              16


                                                          CORE ROE SURPASSES 10%

================================================================================


     Bar graph appears here indicating growth of core return on equity
     for the 1999, 2000, 2001 and 2002 fiscal years and the annualized
     first quarter of fiscal year 2003. Plot points appear below:

        Fiscal Year or Quarter                Percent (%)
        ----------------------                -----------

              1999                              5.94
              2000                              7.74
              2001                              6.96
              2002                              7.68
        Annualized First quarter 2003          10.46

                                                                              17


                                                      CORE ROA APPROACHING 1.00%

================================================================================


     Bar graph appears here indicating performance on Return on Assets
     for the 1999, 2000, 2001 and 2002 fiscal years and the annualized
     first quarter of fiscal year 2003. Plot points appear below:

        Fiscal Year or Quarter                Percent (%)
        ----------------------                -----------

              1999                              0.60
              2000                              0.77
              2001                              0.63
              2002                              0.67
        Annualized First quarter 2003           0.87
                                                                              18


                                                INITIATIVES TO INCREASE EARNINGS

================================================================================

o    Its historically  conservative  operating philosophy has allowed Central to
     benefit  substantially from selective strategic  initiatives in the current
     business and interest rate environment.

o    Emerging  payback from  competitive-enhancing  expenditures  on  personnel,
     technology, and new products.

o    Portfolio  shifts from short-term  investments to higher yielding loans and
     corporate securities, along with increased lending activity.

o    Utilization  of most  cost-effective  funding  sources  among  deposit  and
     borrowing alternatives.

o    Established  emphasis on avoiding  undue risk exposure  leaves Central well
     placed to absorb any economic slowdown.

                                                                              19


                                                    EFFECTIVE CAPITAL MANAGEMENT

================================================================================

o    Capital leverage  employed to grow balance sheet from $220 million at March
     31, 1993 to $473 million at June 30, 2002.

o    Equity to assets ratio declined from 12.43% to 8.26% over same time period.

o    Stock  repurchase  program since 1999 has resulted in cumulative  total 19%
     share buyback.

o    Consecutive cash dividends for 24 quarters since 1996.

o    Book value per share  increased  from $17.07 at March 31, 1997 to $23.93 at
     June 30, 2002.

                                                                              20

                                                            BOOK VALUE PER SHARE

================================================================================

     Bar graph appears here  indicating 12% compound  annual growth of
     book value per share covering the 1997,  1998,  1999,  2000, 2001
     and 2002 fiscal years. Plot point appears below:


               Fiscal Year                   Price Per Share
               -----------                   ---------------

                  1997                          $17.07
                  1998                           18.72
                  1999                           19.70
                  2000                           20.66
                  2001                           22.69
                  2002                           23.86

                                                                              21


                                                       FUNDAMENTAL TRADING VALUE

================================================================================

                                Central's trading ratios are comparable to peers



                                                    MASS. THRIFT    MASS. THRIFT
       VALUATION                       CENTRAL        GROUP*          GROUP*
         DATA                          BANCORP         MEAN           MEDIAN
       ---------                       -------      ------------    ------------
                                                              
   PRICE / BOOK VALUE                   137.9%        136.7%           132.2%
   PRICE / TANGIBLE BOOK                146.3%        147.0%           143.2%
   PRICE / LTM CORE EPS                  15.2x         15.5x            15.1x
   PRICE / QTR. CORE EPS                 13.1x         14.2x            13.6x
   CALENDAR YTD PRICE CHG.               25.1%         25.8%            27.5%
<FN>

*    Group of all publicly traded  Massachusetts  thrifts,  excluding  announced
     acquisitions and mutual holding companies; trading market data as of August
     29, 2002.
</FN>

                                                                              22



                                                   COMPARATIVE STOCK PERFORMANCE

================================================================================

                Central handily outperformed market benchmarks.


     Horizontal bar chart appears here  indicating  performance of the
     Central Bancorp's stock compared to certain market benchmarks for
     the period from December 31, 2000 to August 30, 2002. Plot points
     appear below:

                                              Performance Percentage
                                              ----------------------
                 Central Bancorp                      91.1%
                 Nasdaq Bank Index                    22.1%
                 Dow Jones Industrial Average        -19.7%
                 S&P 500 Index                       -30.6%



                                                                              23


                                             VALUATION IMPROVEMENT OPPORTUNITIES

================================================================================

o    Continue to improve core earnings and ROE.

o    Generate additional fee income.

o    Reap benefits of past efforts to strengthen operating results.

o    Sustain competitive franchise position.

o    Take advantage of favorable growth prospects.

o    Continue  delivery  of returns to  stockholders  through  dividends,  stock
     repurchases, and improved valuation fundamentals.

o    Minimal dilution from  director/management  stock benefit plans.

                                                                              24


                                                     DISSIDENT GROUP: PL CAPITAL

================================================================================

o    PL Capital Group has brief tenure as a Central stockholder having commenced
     its first stock purchases in early 2001.

o    PL Capital files 13D in July 2001 disclosing its sale agenda:
                                                      -----------
     "The purpose of the acquisition of the shares of Common Stock by members of
     the Group is to profit from  appreciation in the market price of the Common
     Stock  through the  assertion of  shareholder  rights and  influencing  the
     policies of the Company."

     "Therefore,  the Group  believes that the optimal way to maximize the value
     of the Company's franchise, and dramatically increase shareholder value, is
     for the Board of Directors of Central  Bancorp to  investigate  the sale of
     the Company to a larger financial services organization."

o    PL Capital acknowledges offer for open dialogue by Central:
     "On July 26, 2001,  the CEO of the Company,  John  Doherty,  agreed to meet
     with the principals of the PL Capital Group,  at a mutually  agreeable date
     in the near  future.  Members of the Group look forward to meeting with Mr.
     Doherty and his entire senior management team."

                                                                              25


                                                CONTINUING ACTIONS OF PL CAPITAL

================================================================================

o    William Morrissey, SVP and representative of Central management, makes open
     invitations to PL Capital on August 1, August 13, and October 30, 2001:
     "With  reference to your letter of October 25, 2001 to John  Doherty,  this
     letter is to reiterate that I remain willing to meet with you any time, any
     place as you have repeatedly been advised in the past."

o    Management meets with representatives of PL Capital in spring 2002.

o    PL Capital  discloses  in  February  2002 its  intention  to  nominate  two
     candidates for election to Central's Board;  Central  provides  shareholder
     list and other related materials to PL Capital.

o    PL files  preliminary  proxy in July 2002  declaring  opposition to Central
     management and asserting its own single-action sale agenda:
                                                    -----------
     "In our opinion,  Central  Bancorp has not performed  adequately to justify
     its existence as an independent entity."

o    PL Capital nominates Garrett Goodbody and Richard Fates for Board positions
     to be elected at Central's annual meeting in September 2002.

                                                                              26


                                                        CENTRAL'S BOARD NOMINEES

================================================================================

o    Central's  Board  nominees  have the  background  and  experience  that are
     critical to the success of a community bank.

o    Paul Bulman (new nominee)
     =    Former President of two Massachusetts community banks
     =    Former Massachusetts Commissioner of Banks, 1983 to 1987
     =    Chairman,  Policy  Holders  Protective  Committee,  Savings  Bank Life
          Insurance Company

o    John F. Gilgun, Jr. (director since 1987)
     =    Former Mayor of Woburn, Massachusetts
     =    Over 40 years  experience in local  commercial  and  residential  real
          estate

o    Marat E. Santini (director since 1972)
     =    Over  50  years  experience  in  local  commercial,   industrial,  and
          residential real estate construction

                                                                              27


                                                         CENTRAL'S BOARD ACTIONS

================================================================================

o    Central's Board performed an internal  assessment analysis in July 2001 and
     August 2002, which included the following:

     =    Evaluated earnings prospects.

     =    Assessed competitive viability.

     =    Reviewed results and implementation of current business plan.

     =    Determined impact of economic trends and regulatory issues.

     =    Analyzed   valuation  outlook  as  independent  entity  and  potential
          acquisition target.

     =    Consulted advisors to help with assessment process.

     =    Developed consensus based on assessment of relevant information.

                                                                              28


                                                  RESULTS OF ASSESSMENT ANALYSIS

================================================================================

o    Earnings prospects have not peaked.

o    Operating  budget indicates that Central is primed to benefit from earnings
     expansion.

o    Financial projections and assumptions support enhanced outlook.

o    Favorable demographics and economic conditions exist in market area.

o    Consolidation  by large  regional  banks such as Banknorth,  Citizens,  and
     Fleet presents local community banks with opportunities as niche players.

o    Valuation fundamentals for community banks are still improving.

o    Investor  agitation  could  disrupt focus on building  long-term  value and
     maximizing results for all shareholders.
                            ---
                                                                              29


                                                     CENTRAL'S BOARD CONCLUSIONS

================================================================================

o    Transforming  "projected" earnings growth to "actual" will deliver enhanced
     shareholder value.

o    Remaining  independent  affords  Central the  opportunity  and  position of
     strength to control its own destiny and implement business plan.

o    Recent financial  performance and stock price increase  continue to provide
     sound reasoning for following the strategic business plan.

o    Financial advisors  indicate:  "To sell the Company now would not allow the
     stockholders  to  potentially  reap the benefits of the hard work of recent
     years to improve operating results."

o    The Board has not received any recent offer proposals to acquire Central.

o    The Board  remains  aware of its  fiduciary  duty to  explore  all means to
     maximize shareholder value.

                                                                              30