<p>For Berkeley it might be worth it to go to a CC and transfer. For other schools, namely privates, your best shot is senior year in High School. With a few exceptions, it is nearly impossible to transfer into a top 20 university from any school. </p>
<p>So you will have to commit to Berkeley and remain so for two years. Depending on your major, your GPA will probably remain the same as your current GPA in high school. </p>
<p>By the way, this was sort of a redundant question. If you really desire to go to Berkeley you will no doubt apply in high school. If you don’t get in then, your only other option is a CC… What do you have to loose?</p>