American Academy of Otolaryngology -- Head and Neck Surgery Foundation Prescribes SumTotal; 12,000 Physicians and Health Professionals Will Use SumTotal's Enterprise Suite for CME.

MOUNTAIN VIEW, Calif. -- SumTotal(TM) Systems (Nasdaq:SUMT), the largest provider of learning and business performance technologies and services, announced that The American Academy of Otolaryngology -- Head and Neck Surgery Foundation (AAO-HNSF) has chosen the SumTotal Enterprise Suite to improve the knowledge and performance of AAO-HNSF's 12,000 physicians and health professionals by centralizing and modernizing continuing medical education (CME).

Members of the Academy -- the world's largest organization of ear, nose and throat specialists -- will access the new "AcademyU(TM)" learning management system (LMS) to enhance their professional credentials, maintain board certification requirements and learn about developments in their specialty areas. SumTotal will bring the benefits of distance learning directly to a member's medical practice, allowing them to spend more time providing quality care for patients while they build skills and competencies that qualify for American Medical Association (AMA) Physician's Recognition Award (PRA) category 1 CME credits. The Accreditation Council for Continuing Medical Education (ACCME) authorizes the AAO-HNSF to provide continuing medical education for physicians.

SumTotal will provide a centralized environment that combines online patient case studies, eBooks, quizzes and global research with blended instructor-led training courses ranging from diagnosis, evaluation and treatment of otolaryngologic disorders to new operative procedures, drugs and medical devices.

"This strategic learning initiative reflects our commitment to facilitating the advancement of the science and art of medicine through research, education, and advocacy," said J. David Osguthorpe, MD, AAO-HNSF Coordinator for Education. "SumTotal Enterprise Suite combines a solid backbone to deploy instructionally-sound content with the flexibility to create highly-specialized courses and customized learning plans."

"A physician's top priority is treating patients," said Don Fowler, SumTotal's interim CEO. "So the aim of our system is to not only make it easier for doctors to educate themselves and boost professional know-how, but also do this in a way that gets physicians back in front of patients as soon as possible."

"SumTotal's experience serving the healthcare industry is unparalleled among providers of learning and business performance technologies," added Fowler. "With more than 100 healthcare organizations as clients -- including Mayo Clinic and New York-Presbyterian Hospital -- any association or institution dedicated to practicing medicine will find we have a community of users unmatched by our competitors."

About the American Academy of Otolaryngology -- Head and Neck Surgery

The American Academy of Otolaryngology -- Head and Neck Surgery, one of the oldest medical associations in the nation, represents more than 12,000 physicians and allied health professionals who specialize in the diagnosis and treatment of disorders of the ears, nose, throat, and related structures of the head and neck. The Academy serves its members by facilitating the advancement of the science and art of medicine related to otolaryngology and by representing the specialty in governmental and socioeconomic issues. The organization's mission is: "Working for the Best Ear, Nose, and Throat Care." For more information, visit www.entnet.org.

About SumTotal Systems, Inc.

SumTotal Systems, Inc. (Nasdaq:SUMT) is the largest provider of learning and business performance technologies and services. SumTotal deploys mission-critical solutions that align learning with organizational and business goals to generate significant bottom-line results. With more than 17 million users worldwide, SumTotal has helped accelerate performance and profits for more than 1,500 of the world's best-known companies and government agencies including Accenture, Aetna, Cendant, D&B, DaimlerChrysler, Delta Air Lines, Harley-Davidson, Microsoft, Novartis, PNC Bank, U.S. Army, U.S. Air Force, U.S. Navy, U.S. Coast Guard, U.S. Bancorp, United Airlines, Vodafone, Wachovia and Wyeth. SumTotal has offices in Heidelberg, Hong Kong, Hyderabad, India, London, Paris, Sydney, Tokyo, and the United States. For more information about SumTotal's products and services, visit www.sumtotalsystems.com.

Safe Harbor Statement/ Forward-Looking Statements

Information in this press release contains forward-looking statements. These statements represent SumTotal Systems' expectations or beliefs concerning future events and include statements, among others, regarding SumTotal Systems' new product, SumTotal Enterprise Suite 7.1. 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) unknown errors or bugs in SumTotal Enterprise Suite 7.1; (ii) inability to fix in a timely fashion unanticipated bugs, errors or defects that materially impact the functionality or usability of SumTotal Enterprise Suite 7.1, or unanticipated problems in customer upgrades to SumTotal Enterprise Suite 7.1 from prior SumTotal products (iii) unexpected shipment problems or delays of SumTotal Enterprise Suite 7.1; (iv) customers or partners delaying purchasing or upgrade decisions until there is widespread market acceptance of SumTotal Enterprise Suite 7.1; (v) the acceptance of SumTotal Enterprise Suite 7.1 and future product offerings; (vi) the ability to successfully implement SumTotal Systems' solutions; (vii) the ability to successfully address technological developments and standards; (viii) ability to successfully manage growth, significant current and expected additional competition, and the need to continue to expand product distribution and services offerings; and (ix) other events and other important factors disclosed previously and from time to time in SumTotal Systems' filings with the Securities and Exchange Commission, including the Annual Report for fiscal year 2004 on Form 10-K and its quarterly report for the first and second quarter of fiscal year 2005 on Form 10-Q filed August 1, 2005, and August 9, 2005, respectively.