SumTotal Wins Contract to Provide Software to 17,000 San Diego County Employees

Mountain View, Calif. – June 6, 2007 – SumTotal® Systems, Inc. (Nasdaq: SUMT), a global provider of talent and learning management solutions, has received a contract from Northrop Grumman Corporation to provide the County of San Diego with TotalLMS™, a learning management system (LMS) that will deliver and report on certification and regulatory requirements for the county’s approximately 17,000 employees. TotalLMS delivers, tracks and analyzes online education via the Internet.

The SumTotal deal announced today is one part of a larger contract the County of San Diego awarded in 2006 to Northrop Grumman to administer information technology and telecommunications services, including data center, help desk, desktop, network, applications and cross-functional services.

“We believe SumTotal’s system will be fundamental to underpinning the management of the county’s compliance efforts,” said James Gill, director of Government Solutions for SumTotal. “We’re honored that Northrop Grumman chose SumTotal’s platform for the delivery, analysis and management of the county’s regulatory and certification training.”

San Diego County is the nation's fourth most populous county. It has an annual operating budget of more than $4 billion

About SumTotal Systems, Inc.
SumTotal Systems, Inc. (NASDAQ: SUMT) is a global provider of talent and learning management solutions. SumTotal deploys mission-critical solutions designed to align goals, develop skills, assess performance, plan for succession and set compensation. SumTotal’s solutions aim to accelerate performance and profits for more than 1,500 companies and governments of all sizes, including six of the world’s 10 biggest pharmaceutical makers, six of the 10 largest automotive companies in the world, four of the five branches of the U.S. Armed Forces, three of the world’s top five airlines, two of the five largest banks in the world and two of the world’s top five specialty retailers. Mountain View, Calif.-based SumTotal has offices across Asia, Australia, Europe and North America. For more information about SumTotal's products and services, visit www.sumtotalsystems.com.

SumTotal and the SumTotal logo are trademarks or registered trademarks of SumTotal Systems Inc. and/or its affiliates in the United States and/or other countries. Other names may be trademarks of their respective owners.

Safe Harbor / Forward-Looking Statements
Information in this press release contains forward-looking statements, including, but not limited to, the anticipated benefits of SumTotal’s products and solutions, including TotalLMS. These statements represent SumTotal Systems' expectations or beliefs concerning future performance and events. These statements are not historical facts or guarantees of future performance or events and are based on current expectations, estimates, beliefs, assumptions, goals and objectives, and involve known and unknown risks, uncertainties and other factors that may cause actual results to be materially different from the results expressed or implied by these statements. Readers of this press release are cautioned not to place undue reliance on any forward-looking statements. Additional factors that could cause actual results to differ include, but are not limited to: (i) the ability to successfully manage and increase growth, significant current and expected additional competition, and the need to continue to expand product distribution and services offerings; (ii) the acceptance of SumTotal’s software suite, including TotalLMS, and future product offerings; (iii) unknown errors or bugs in SumTotal’s software suite; (iv) the ability to fix in a timely fashion unanticipated bugs, errors or defects that materially impact the functionality or usability of SumTotal’s software; (v) the ability to successfully implement and host SumTotal Systems' solutions in the future; (vi) the ability to successfully address technological developments and standards; (vii) the ability to incorporate TotalLMS with the services and products provided by Northrop Grumman to the County of San Diego; and (viii) other events and other important factors disclosed previously and from time to time in SumTotal’s filings with the Securities and Exchange Commission, including the company’s annual report on Form 10-K filed on March 16, 2007, its quarterly report on Form 10-Q for the quarter ended March 31, 2007 filed on May 9, 2007, its Form S-3/As filed on September 28, 2006, and October 2, 2006, and its Form 8-Ks. The forward-looking statements contained in this release are made as of the date of this release, and SumTotal does not assume any obligation to update such statements to reflect events or circumstances occurring after the date of this release.