UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT

     Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

                                February 9, 2006
                                 Date of Report
                        (Date of earliest event reported)

                              QUALITY SYSTEMS, INC.
             (Exact name of registrant as specified in its charter)

                                   CALIFORNIA
                 (State or other jurisdiction of incorporation)

                 0-13801                         95-2888568
         (Commission File No.)       (IRS Employer Identification Number)

                       18191 Von Karman Avenue, Suite 450
                            Irvine, California 92612
                    (Address of Principal Executive Offices)

                                 (949) 255-2600
              (Registrant's Telephone Number, Including Area Code)

Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions ( see General Instruction A.2. below):

|_|   Written communications pursuant to Rule 425 under the Securities Act (17
      CFR 230.425)

|_|   Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
      240.14a-12)

|_|   Pre-commencement communications pursuant to Rule 14d-2(b) under the
      Exchange Act (17 CFR 240.14d-2(b))

|_|   Pre-commencement communications pursuant to Rule 13e-4(c) under the
      Exchange Act (17 CFR 240.13e-4(c))



Item 2.01. Results of Operations and Financial Condition

      The information in this Form 8-K and the Exhibits attached hereto shall
not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act
of 1934, as amended (the "Exchange Act"), nor shall it be deemed incorporated by
reference in any filing under the Securities Act of 1933, as amended, or the
Exchange Act, except as shall be expressly set forth by specific reference in
such a filing.

      On February 9, 2006, Quality Systems, Inc. (referred herein to as the
"Company," "Registrant" or "QSI") held a conference call concerning its
financial performance for the quarter ended December 31, 2005. A transcript of
the conference call is attached to this Form 8-K as Exhibit 99.1. The conference
call contains forward-looking statements regarding QSI and includes cautionary
statements identifying important factors that could cause actual results to
differ materially from those anticipated.

Use of Non-GAAP Financial Measures

      The Company from time to time discloses its Days Sales Outstanding ("DSO")
which is a Non-GAAP financial measure. During the quarter ended December 31,
2005, DSO was 129 days. The Company calculates DSO as follows: Net revenue for
the quarter is annualized (multiplied by four) and then divided by 365 days to
yield an average daily sales amount. The balance of accounts receivable net of
any reserves for bad debts is then divided by that average daily sales amount
resulting in a DSO figure. For the quarter ended December 31, 2005, the
calculation was as follows:

Quarterly Revenue:                          $26,752,000

Annualized (X 4):                           $107,008,000

Divided by 365:                             $293,173   = Average daily revenue

Net Accounts Receivable:                    $37,861,000

Divided by average daily revenue:           $293,173

Equals:                                     129 days (rounded)

      The Company believes the use of DSO provides useful information to
investors regarding the Company's ability to convert its receivables into cash.
DSO thus provides more detailed information regarding the Company's financial
results than the financial measures calculated and presented in accordance with
GAAP.

      As used herein, "GAAP" refers to accounting principles generally accepted
in the United States.

Item 9. 01 Financial Statements and Exhibits

(c)   Exhibits.

      99.1  Transcript of conference call held on February 9, 2006.



                                   SIGNATURES

      Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

Date:  February 14, 2006                    QUALITY SYSTEMS, INC.


                                            By: /s/  Paul Holt
                                                --------------------------------
                                                Paul Holt
                                                Chief Financial Officer



                                INDEX TO EXHIBITS

Exhibit
 Number     Description
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  99.1      Transcript of conference call held on February 9, 2006.