Canceled classes were supposed to have started on June 22 and July 29.
Cal Poly Pomona President J. Michael Ortiz, in an e-mail Sunday, told students that the governor's proposed cut to the university of $20 million to $35 million had left him with "no choice" but to shut down the early and late summer sessions.
The university will instead offer "pay-as-you-go classes" through the College of the Extended University to support graduation requirements. The university says those courses meet degree requirements for California State Polytechnic University, Pomona.
The Associated Press and City News Service contributed to this report.