If I take one or two community college courses over the summer that are UC trasnferrable, would this be factored into my UC gpa? Would they count as regular courses or would there be a weight?
UC answers that question for you:
If a high school student takes a UC-transferable course at a college/university and lists it on their UC application, will the grade earned in the course be included in their GPA, even if it is not listed on their high school transcript?
Students must report all enrollment and academic coursework. If the course the student took is in an “a-g” subject area, the grade will be calculated in the GPA, and if the course is transferable, it will earn an extra grade point and college credit. Upon admission to UC, the student will be required to submit an official transcript from the college/university in addition to their high school transcript.
http://admission.universityofcalifornia.edu/counselors/q-and-a/calculating-gpa/#16
So yes they count, and yes, they are weighted.