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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 UdOMe8efnQ6tK/wkfmXkoQ==

<SEC-DOCUMENT>0001375856-07-000001.txt : 20070809
<SEC-HEADER>0001375856-07-000001.hdr.sgml : 20070809
<ACCEPTANCE-DATETIME>20070809202615
ACCESSION NUMBER:		0001375856-07-000001
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20070809
FILED AS OF DATE:		20070809
DATE AS OF CHANGE:		20070809

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			QUALITY SYSTEMS INC
		CENTRAL INDEX KEY:			0000708818
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER INTEGRATED SYSTEMS DESIGN [7373]
		IRS NUMBER:				952888568
		STATE OF INCORPORATION:			CA
		FISCAL YEAR END:			0331

	BUSINESS ADDRESS:	
		STREET 1:		18191 VON KARMAN AVENUE
		CITY:			IRVINE
		STATE:			CA
		ZIP:			92612
		BUSINESS PHONE:		7147317171

	MAIL ADDRESS:	
		STREET 1:		18191 VON KARMAN AVENUE
		STREET 2:		SUITE 450
		CITY:			IRVINE
		STATE:			CA
		ZIP:			92612

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Pflueger Russell
		CENTRAL INDEX KEY:			0001375856

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12537
		FILM NUMBER:		071042453

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		949 255-2600

	MAIL ADDRESS:	
		STREET 1:		18191 VON KARMAN AVENUE, SUITE 450
		CITY:			IRVINE
		STATE:			CA
		ZIP:			92612
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2007-08-09</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000708818</issuerCik>
        <issuerName>QUALITY SYSTEMS INC</issuerName>
        <issuerTradingSymbol>QSII</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001375856</rptOwnerCik>
            <rptOwnerName>Pflueger Russell</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>18191 VON KARMAN AVENUE, SUITE 450</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>IRVINE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>92612</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>43.26</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2007-08-09</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>5000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2008-08-09</value>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2014-08-09</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>5000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Original grant of 5,000 options dated August 9, 2007 vests in four equal annual installments beginning August 9, 2008.  The options fully vest at the end of the director's term of service if he is not re-elected to the Board, except for voluntary prior withdrawal or prior removal for cause.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Russell Pflueger</signatureName>
        <signatureDate>2007-08-09</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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