Is it too late for a Highschool Transfrer?

The time to file transfers usually happens at the beginning of the year & I may have already missed the deadline...Del Mar starts in August 21st, how will I be able to do this ASAP! I don't live in none of these areas..I live in the East side. [Alum Rock district] Btw, my mom already enrolled me to Willow Glen High ( Used a friends adress and they didn't ask for anything else.) but she said if I have a really good reason and plan she might let me go to Del Mar *Really want to go there!* I can still file the transfer but I'd probably be put on a waiting list.:/ Do we give the school a call and ask? Do we need to change our residential address OR go to Del Mar and ask them if I can attend their school [Campbell District] (usually they allow it if a parent works in the area). And my mom is only working there for a year so.. :I [Campbell District] but idk I really want to go (Del Mar). If the only way to go to another school is to use a friend's address, then one of my parents will have to go to the school district office & file a change of address. (They might ask for utility bills etc.. to show proof that I live there so) Can someone tell me what can I do in that case? My parents aren't together, so my mom can imply that they've separated & one of them is living at the new address--that will help smooth over any possible discrepancies if people find out that I live somewhere else.