X0303 4 2011-02-01 0 0000708818 QUALITY SYSTEMS, INC QSII 0001258331 CLINE PATRICK C/O QUALITY SYSTEMS, INC. 18111 VON KARMAN AVE STE. 600 IRVINE CA 92612 1 1 0 0 President, Quality Systems Inc Common stock 2011-02-01 4 S 0 10000 80.13 D 3750 D Common stock 2011-02-01 4 M 0 15000 37.09 A 18750 D Employee stock option (right to buy) 37.09 2011-02-01 4 M 0 15000 0 D 2011-08-11 Common stock 15000 0 D The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 12/13/2010. The transaction was executed in multiple trades at prices ranging from $80.00 to $80.25. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff or the issuer full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Original grant of 15,000 options dated August 11, 2006 vests in four equal installments beginning August 11, 2007. /s/ Patrick Cline 2011-02-02