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

   MOUNTAIN VIEW, Calif.--June 6, 2007--SumTotal(R) 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(TM), 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.

CONTACT: SumTotal Systems, Inc.
Media contact:
Bill Perry, +1-614-975-7538
bperry[at]sumtotalsystems.com
or
Investors contact:
Gwyn Lauber, +1-650-934-9594
glauber[at]sumtotalsystems.com