Here’s a good recent piece on class size as it impacts African-American students. What’s brought out in the article is also that Californians pay for the (now crumbling) K-3 reductions to 20 with the largest middle and high school classes in the country.

John Rogers, director of UCLA’s Institute for Democracy, Education, and Access (IDEA), said … it’s important to note that California already has the largest class sizes in the country in middle and high schools, particularly in the subject areas of English, social studies and science.