I want to find out about taking college cles over the summer to get into AP cles???anyone done this?

Right now im a Sophmore and and number one in my cl, but im tied with probably 10 other people for #1 only because the AP cles which boost GPA because they are weighted havent come into play yet. We are not allowed to take AP cles until our Junior year. Anyway I did not get into biology last year which would put me in chemistry this year and AP chem nxt yr only because i got a D in science in 7th grade...so im not behind or in sped cles im basicly just in the middle but i def should have been in biology last year instead of this year because im totally capable of the work i have the highest grade in Academic Bio this year and had the highest grade all year last year in Physical science...so what im getting at is that because i did bad in science in 7th grade they did not let me into biology(the advanced class) last year so im in biology this year and the kids who had biology last year are in chem this year and will take AP chem next year, but i will not be able to take AP chem till my Sr year....the same thing happended to me in math! :( so im just really frustrated because im capable, but have no shot at #1 in my class because i will be 'behind' as far as AP classes....so i wanted to take chemistry at a community college this summer in order to get into AP chem with the kids that are in chemistry this year.....is this possible?? i know i will have to ask my guidance counselor, but i was just wondering if anyone else has done this or knows anyone who has......thanks and sry that was kinda long :)