<p>Classes are huge… also, L&S CS and EECS classes are generally the same, CS is CS. Expect 300-600 in lower div lectures. You’ll also have sections and lab (led by a TA/GSI) which tend to be 20-30 people, and are generally a lot more interactive than lecture.</p>
<p>Upper division CS courses, well, those lectures are pretty large too… the popular classes can have 300 people. Others have 100, some are as small as 50 people. If you want one on one time with the professor, that usually only happens during office hours.</p>
<p>If you want actual numbers, you can search the schedule for CS classes: [Home</a> Page - Online Schedule Of Classes](<a href=“http://schedule.berkeley.edu/]Home”>http://schedule.berkeley.edu/)</p>