<p>Yes, you can register at community colleges just like anyone else. If you will be attending community college, be sure to check [Welcome</a> to ASSIST](<a href=“http://www.assist.org%5DWelcome”>http://www.assist.org) to see what courses can transfer to a UC or CSU.</p>
<p>Among four year universities…</p>
<p>Berkeley specifically allows high school students to register during summer sessions.
[|</a> Berkeley Summer Sessions](<a href=“http://summer.berkeley.edu/pre-collegiate]|”>Pre-Collegiate Program | Berkeley Summer Sessions)</p>
<p>San Jose State does not say anything prohibiting high school students from registering during summer sessions.
[SJSU</a> : Summer Session](<a href=“Summer Session | San Jose State University”>http://summer.sjsu.edu/)</p>
<p>Both Berkeley and San Jose State allow non-regular students to take courses on a space available basis during regular semesters:</p>
<p>[Concurrent</a> Enrollment Overview — UC Berkeley Extension](<a href=“http://extension.berkeley.edu/info/ConcurrentOverview.html]Concurrent”>http://extension.berkeley.edu/info/ConcurrentOverview.html)
[What</a> is Open University? — Open University](<a href=“http://ou.sjsu.edu/faqs/what-is-open-university]What”>http://ou.sjsu.edu/faqs/what-is-open-university)</p>
<p>You may want to check the policies at other universities in the area as well.</p>
<p>However, if you intend to transfer as a junior to a public university in California, the admission and other policies are generally more favorable to those whose course work was entirely at California community colleges. Some refuse to take transfer students who have too much college credit if any credit is from four year colleges or universities.</p>