Police were forced to use pepper spray on a group of Santa Monica College students after they burst into a trustees' meeting and began shouting their opposition to the plan, the Santa Monica (Calif.) Daily Press reported.
At least two students received minor injuries, college spokesman Bruce Smith said.
Some 200 demonstrators reportedly tried to enter the room where the trustees were holding their meeting Tuesday night.
The students oppose a proposal to hike tuition for popular classes based on what they actually cost the college.
College officials came up with the plan as a way for students to get the classes they need to graduate or transfer instead of waiting because those classes are full.
State budget cuts have forced California's community colleges to slash the number of classes they can offer.