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 June 8, 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 and year ended March 31, 2006. 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 March 31, 2006, DSO was 115 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 March 31, 2006, the calculation was as follows:

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.

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