Exhibit 99.1

For Further Information, Contact:
Quality Systems, Inc.		Susan J. Lewis
18111 Von Karman Avenue, Suite 600		Phone: (303) 804-0494
Irvine, CA 92612		slewis@qsii.com
Phone: (949) 255-2600
Paul Holt, CFO, pholt@qsii.com
FOR IMMEDIATE RELEASE             May 28, 2010

QUALITY SYSTEMS REPORTS FISCAL 2010 FOURTH QUARTER AND
YEAR-END RESULTS

IRVINE, Calif. ... May 28, 2010 —... Quality Systems, Inc. (NASDAQ:QSII) today announced the results of operations for its fiscal 2010 fourth quarter and year ended March 31, 2010. The Company posted record net revenues of $78.5 million in the fourth quarter, an increase of 19% from $65.8 million generated during the same quarter of the prior year. The Company reported net income of $13.1 million, up 15% when compared with net income of $11.4 million for the comparable quarter last year. Fully diluted earnings per share were $0.45 in the quarter, an increase of 13% versus $0.40 fully diluted earnings per share reported in the same quarter last year.

The fourth quarter results were negatively impacted by amortization of acquired intangibles and transaction costs related to the acquisition of Opus Healthcare Solutions, Inc. Also impacting the results were decreases in collections from the Company’s revenue cycle management (RCM) division due to record snowfall across the East Coast and seasonality.

Revenue for the fiscal year ended March 31, 2010 was $291.8 million, an increase of 19% when compared with fiscal year 2009 revenue of $245.5 million. Net income for fiscal year 2010 was $48.4 million, an increase of 5% from fiscal 2009 net income of $46.1 million. Fully diluted earnings per share increased to $1.68 in fiscal year 2010 from $1.62 earned during fiscal year 2009, up 4%.

The Company also announced the resignation of Chief Operating Officer Philip N. Kaplan. Operational responsibility of the Company’s business units has been assumed by Patrick Cline, president of Quality Systems.

Steven T. Plochocki, chief executive officer, commented on the results, stating: “We continue to focus on strategically positioning the Company for growth and additional market penetration expected to result from the American Recovery and Reinvestment Act (ARRA) by prudently investing in sales, marketing, implementation and training. Phil’s contributions and efforts in preparing the infrastructure of the Company for the five-year stimulus run proved extremely beneficial, and we thank him for his contributions.”

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Quality Systems, Inc.
Fiscal 2010 Fourth Quarter and Year-end Results
Page 2

Quality Systems, Inc. announced today that the Company’s Board of Directors declared a cash dividend of thirty cents ($0.30) per share on the Company’s outstanding shares of Common Stock, payable to shareholders of record as of June 17, 2010, with an anticipated distribution date of July 6, 2010, pursuant to the Company’s current policy to pay a regular quarterly dividend of thirty cents ($0.30) per share on the Company’s outstanding shares of Common Stock, subject to further Board review and approval, and establishment of record and distribution dates by the Board prior to the declaration and payment of each such quarterly dividend.

The Company also announced that its 2010 Annual Shareholders’ Meeting will be held on August 11, 2010 at 1:00 PM. The meeting will be held at the Marriott Irvine located at 18000 Von Karman Avenue, in Irvine, Calif., 92612. Holders of record as of June 15, 2010 are eligible to vote and attend. Proxy materials and the 2010 Annual Report will be made available to shareholders of record and will also be posted on the Company’s website at www.qsii.com.

Quality Systems, Inc. will hold a conference call to discuss its fiscal 2010 fourth quarter and year-end financial results on Friday, May 28, 2010 at 10:00 AM ET (7:00 AM PT). All participants should dial 877-941-6009 at least ten minutes prior to the start of the call. International callers should dial 480-629-9770. To hear a live Web simulcast or to listen to the archived webcast following completion of the call, please visit the company website at www.qsii.com, click on the “Investor Relations” tab, then select “Conference Calls,” to access the link to the call. To listen to a telephone replay of the conference call, please dial 800-406-7325 or 303-590-3030 and enter reservation identification number 4305314. The replay will be available from approximately 12:00 PM ET on Friday, May 28, 2010, through 11:59 PM ET on Friday, June 4, 2010.

A transcript of the conference call will be made available on the QSII website (www.qsii.com).

About Quality Systems, Inc.

Irvine, Calif.-based Quality Systems, Inc. and its NextGen Healthcare subsidiary develop and market computer-based practice management, patient records and revenue cycle management applications as well as connectivity products and services for medical and dental group practices. Visit www.qsii.com and www.nextgen.com for additional information.

SAFE HARBOR PROVISIONS FOR FORWARD-LOOKING STATEMENTS

This news release may contain forward-looking statements within the meaning of the federal securities laws. Statements regarding future events, developments, the Company’s future performance, as well as management’s expectations, beliefs, intentions, plans, estimates or projections relating to the future (including, without limitation, statements concerning revenue and net income), are forward-looking statements within the meaning of these laws and involve a number of risks and uncertainties. Management believes that these forward looking statements are reasonable and are based on reasonable assumptions and forecasts, however, undue reliance should not be placed on such statements that speak only as of the date hereof. Moreover, these forward-looking statements are subject to a number of risks and uncertainties, some of which are outlined below. As a result, actual results may vary materially from those anticipated by the forward-looking statements. Among the important factors that could cause actual results to differ materially from those indicated by such forward-looking statements are: the volume and timing of systems sales and installations; length of sales cycles and the installation process; the possibility that products will not achieve or sustain market acceptance; seasonal patterns of sales and customer buying behavior; the development by competitors of new or superior technologies; the timing, cost and success or failure of new product and service introductions, development and product upgrade releases; undetected errors or bugs in software; product liability; changing economic, political or regulatory influences in the health-care industry;

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Quality Systems, Inc.
Fiscal 2010 Fourth Quarter and Year-end Results
Page 3

changes in product-pricing policies; availability of third-party products and components; competitive pressures including product offerings, pricing and promotional activities; the Company’s ability or inability to attract and retain qualified personnel; possible regulation of the Company’s software by the U.S. Food and Drug Administration; uncertainties concerning threatened, pending and new litigation against the Company including related professional services fees; uncertainties concerning the amount and timing of professional fees incurred by the Company generally; changes of accounting estimates and assumptions used to prepare the prior periods’ financial statements; general economic conditions; and the risk factors detailed from time to time in the Company’s periodic reports and registration statements filed with the Securities and Exchange Commission. A significant portion of the Company’s quarterly sales of software product licenses and computer hardware is concluded in the last month of the fiscal quarter, generally with a concentration of such revenues earned in the final ten business days of that month. Due to these and other factors, the Company’s revenues and operating results are very difficult to forecast. A major portion of the Company’s costs and expenses, such as personnel and facilities, are of a fixed nature and, accordingly, a shortfall or decline in quarterly and/or annual revenues typically results in lower profitability or losses. As a result, comparison of the Company’s period-to-period financial performance is not necessarily meaningful and should not be relied upon as an indicator of future performance. The Company undertakes no obligation to publicly update any forward-looking statements, whether as a result of new information, future events or otherwise.

[financial highlights follow]

QUALITY SYSTEMS, INC.
CONSOLIDATED STATEMENTS OF INCOME
(IN THOUSANDS)
(UNAUDITED)

		Three Months Ended March 31,								Twelve Months Ended March 31,
		2010				2009				2010				2009
Revenues:
Software, hardware and supplies		$	24,783			$	20,384			$	89,761			$	85,386
Implementation and training services			4,226				3,629				14,376				13,375
System sales			29,009				24,013				104,137				98,761
Maintenance			23,938				19,340				89,192				72,862
Electronic data interchange services			9,181				7,859				35,035				29,522
Revenue cycle management and related services			9,183				8,112				36,665				21,431
Other services			7,202				6,507				26,782				22,939
Maintenance, EDI, RCM and other services			49,504				41,818				187,674				146,754
Total revenues			78,513				65,831				291,811				245,515
Cost of revenue:
Software, hardware and supplies			2,864				3,273				12,115				13,184
Implementation and training services			2,908				2,502				11,983				10,286
Total cost of system sales			5,772				5,775				24,098				23,470
Maintenance			3,667				3,004				13,339				11,859
Electronic data interchange services			6,683				5,686				25,262				21,374
Revenue cycle management and related services			7,213				5,762				27,715				14,674
Other services			4,963				5,114				20,393				17,513
Total cost of maintenance, EDI, RCM and other services			22,526				19,566				86,709				65,420
Total cost of revenue			28,298				25,341				110,807				88,890
Gross profit			50,215				40,490				181,004				156,625
Operating expenses:
Selling, general and administrative			25,223				17,952				86,951				69,410
Research and development costs			4,269				3,692				16,546				13,777
Amortization of acquired intangible assets			682				357				1,783				1,035
Total operating expenses			30,174				22,001				105,280				84,222
Income from operations			20,041				18,489				75,724				72,403
Interest income			46				161				226				1,203
Other income (expense)			74				(279	)			268				(279	)
Income before provision for income taxes			20,161				18,371				76,218				73,327
Provision for income taxes			7,100				7,015				27,839				27,208
Net income		$	13,061			$	11,356			$	48,379			$	46,119
Net income per share:
Basic		$	0.45			$	0.40			$	1.69			$	1.65
Diluted		$	0.45			$	0.40			$	1.68			$	1.62
Weighted average shares outstanding:
Basic			28,784			$	28,393				28,635				28,031
Diluted			28,929			$	28,526				28,796				28,396
Dividends declared per common share		$	0.30			$	0.30			$	1.20			$	1.15

QUALITY SYSTEMS, INC.
CONSOLIDATED BALANCE SHEETS
(IN THOUSANDS)
(UNAUDITED)

		March 31,				March 31,
		2010				2009
ASSETS
Current assets:
Cash and cash equivalents		$	84,611			$	70,180
Restricted cash			2,339				1,303
Marketable securities			7,158				—
Accounts receivable, net			107,458				90,070
Inventories, net			1,340				1,125
Income taxes receivable			2,953				5,605
Net current deferred tax assets			5,678				3,994
Other current assets			8,684				6,312
Total current assets			220,221				178,589
Marketable securities			—				7,395
Equipment and improvements, net			8,432				6,756
Capitalized software costs, net			11,546				9,552
Intangibles, net			20,145				8,403
Goodwill			46,189				28,731
Other assets			3,647				2,675
Total assets		$	310,180			$	242,101
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable		$	3,342			$	5,097
Deferred revenue			64,109				47,584
Accrued compensation and related benefits			8,951				9,511
Dividends payable			8,664				8,529
Other current liabilities			16,220				8,888
Total current liabilities			101,286				79,609
Deferred revenue, net of current			474				521
Net deferred tax liabilities			10,859				4,566
Deferred compensation			1,883				1,838
Other noncurrent liabilities			7,389				—
Total liabilities			121,891				86,534
Commitments and contingencies
Shareholders’ equity
Common Stock
$0.01 par value; authorized 50,000 shares; issued and outstanding 28,879 and 28,447 shares at March 31, 2010 and March 31, 2009, respectively			289				284
Additional paid-in capital			122,271				103,524
Retained earnings			65,729				51,759
Total shareholders’ equity			188,289				155,567
Total liabilities and shareholders’ equity		$	310,180			$	242,101