SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549

                                   FORM 12b-25

                         Commission File Number 0-28976
                                     -------
                           NOTIFICATION OF LATE FILING

         (Check One): [ ] Form 10-K [ ] Form 11-K [ ] Form 20-F [X] Form
                                      10-Q  [ ] Form N-SAR

For Period Ended:  12/31/99
                               ----------------------------------
[  ] Transition Report on Form 10-K [  ] Transition Report on Form 10-Q
[  ] Transition Report on Form 20-F [  ] Transition Report on Form N-SAR
[  ] Transition Report on Form 11-K

For the Transition Period Ended: -----------------------------------
Read attached instruction sheet before preparing form. Please print or type.

Nothing in this form shall be construed to imply that the Commission has
verified any information contained herein.

If the  notification relates to a portion of the filing checked above,
identify the Item(s) to which the notification relates:

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                           Part I.   Registrant Information

Full name of registrant:   Acadia Group, Inc.
                           --------------------------------------------
Former name if applicable: Acadia National Health System, Inc.
                           -------------------------------------------
Address of principal executive office (Street and number):

                415 Rodman Road
               --------------------------------------------------------
City, State and Zip Code:

               Auburn, Maine 04211
               --------------------------------------------

                           Part II.   Rule 12b-25 (b) and (c)

         If the subject report could not be filed without unreasonable effort or
expense and the registrant seeks relief pursuant to Rule 12b-25(b), the
following should be completed. (Check appropriate box.)


[X]               (a) The reasons  described in reasonable detail in Part III of
                  this form could not be eliminated without  unreasonable effort
                  or expense;

[X]               (b) The subject annual report,  semi-annual report, transition
                  report on Form  10-K,  20-F,  11-K or Form  N-SAR,  or portion
                  thereof  will be filed on or  before  the  15th  calendar  day
                  following the  prescribed  due date; or the subject  quarterly
                  report or transition  report on Form 10-Q, or portion  thereof
                  will be filed on or before the fifth  calendar  day  following
                  the prescribed due date; and

[ ]      (c)      The accountant's statement or other exhibit required by Rule
                  12b-25(c) has been attached if applicable.

                                     Part III.   Narrative

         State below in reasonable detail the reasons why Form 10-K, 11-K, 20-F,
10-Q,  N-SAR or the transition  report portion thereof could not be filed within
the prescribed time period. (Attach extra sheets if needed.)

                        Awaiting Financial Information

                           Part IV. Other Information

         (1)      Name and telephone number of person to contact in regard to
this notification

            William St. Lawrence     (212) 832-8300
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                   (Name)            (Area code)  (Telephone number)

         (2) Have all other periodic  reports required under Section 13 or 15(d)
of the Securities  Exchange Act of 1934 or Section 30 of the Investment  Company
Act of 1940 during the  preceding 12 months or for such shorter  period that the
registrant was required to file such report(s) been filed?  If the answer is no,
identify report(s)
                                            [ X ] Yes [  ] No

         (3) Is it  anticipated  that  any  significant  change  in  results  of
operations  from the  corresponding  period  for the last  fiscal  year  will be
reflected by the  earnings  statements  to be included in the subject  report or
portion thereof?
                                            [  ] Yes [ X ] No

         If  so: attach an explanation of the anticipated change, both
narratively and quantitatively, and, if appropriate, state the reasons why a


reasonable estimate of the results cannot be made.

                       Acadia Group, Inc.
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          (Name of registrant as specified in charted)

Has caused this notification to be signed on its behalf by the undersigned
thereunto duly authorized.

Date  2/11/00                    By /s/ John W. Holt Jr.
- -----------------------       -----------------------------------
                                   Name: John W. Holt Jr.
                                   Title:Chief Executive Officer


         Instruction.  The form may be signed  by an  executive  officer  of the
registrant or by any other duly authorized representative. The name and title of
the person signing the form shall be typed or printed beneath the signature.  If
the  statement  is  signed  on  behalf  of  the   registrant  by  an  authorized
representative   (other   than   an   executive   officer),   evidence   of  the
representative's  authority to sign on behalf of the  registrant  shall be filed
with the form.

                            ATTENTION

         Intentional misstatements or omissions of fact constitute Federal
criminal violations (see 18 U.S.C. 1001).

                       GENERAL INSTRUCTIONS

         1.       This form is required by Rule 12b-25 of the General Rules and
Regulations under the Securities Exchange Act of 1934.

         2. One  signed  original  and four  conformed  copies  of this form and
amendments  thereto must be completed and filed with the Securities and Exchange
Commission,  Washington,  D.C. 20549, in accordance with Rule 0-3 of the General
Rules and Regulations under the Act. The information  contained in or filed with
the form will be made a matter of the public record in the Commission files.

         3. A manually  signed copy of the form and amendments  thereto shall be
filed with each national securities exchange on which any class of securities of
the registrant is registered.

         4.  Amendments to the  notifications  must also be filed on Form 12b-25
but need not restate  information  that has been correctly  furnished.  The form
shall be clearly identified as an amended notification.


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