UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q/A

Amendment No. 1

(Mark One)

FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2012

OR

Commission File Number: 001-31334

SRA International, Inc.

(Exact name of Registrant as Specified in its Charter)

Registrant’s telephone number, including area code: (703) 803-1500

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.     ¨   Yes     x   No

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes   x     No   ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer,” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer   ¨     Accelerated  filer   ¨     Non-accelerated filer   x     Smaller Reporting Company   ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act.).    Yes   ¨     No   x

As of April 30, 2012, there were 1,000 shares outstanding of the registrant’s common stock.

Explanatory Note

The purpose of this Amendment No. 1 to our Quarterly Report on Form 10-Q for the period ended March 31, 2012, as filed with the Securities and Exchange Commission on May 15, 2012, is to furnish Exhibit 101 to the Form 10-Q in accordance with Rule 405 of Regulation S-T.

This Amendment No. 1 to Form 10-Q does not reflect subsequent events occurring after the original filing date of the Form 10-Q or modify or update in any way disclosures made in the Form 10-Q.

PART II. OTHER INFORMATION

Item 6. Exhibits

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized, in the county of Fairfax, Virginia on the 11th day of June, 2012.