Educational Guardianship

[SilverRain]

What is the name of your state (only U.S. law)? Florida

My situation: I recently graduated from high school and moved to Orlando to attend college. My mother has/had full custody over myself, my half-sister, and my half-brother and my grandparents live with them to help pay the bills. The living situation at the house is much, much less than admirable.

Right now, I'm working on getting the kids out one at a time; I have my own apartment and while neither is more deserving than the other, I can handle my sister a little easier because my brother has anxiety and emotional disorders that make him quite the handful. She graduates in two years anyway, so it's better I prepare her to be out on her own as quickly as possible. There is a high school here that would be perfect, because it is 1 mile from UCF, in my district, and just far enough from my apartment that there's a bus for her.

I'm trying to do this as quickly and forcibly as I can WITHOUT ticking off my mother; while my sister needs to get out for her mental stability, I do not desire to create a rift between any of us. My dad's wife found that I can have my mother sign over her educational guardianship to me, because I know that the school will not allow my sister entry if my mother does not live within the district. I've got a nice little story going with my mother to make things seem as they aren't exactly but will be eventually... Yes it's wrong but it's really, really for the best.

So the question is::: Can she write a letter to the school giving me "Educational Guardianship" over my sister, at which point my sister can move here with me and attend school (I read an entry here about a case in Indiana where a letter was written)... Does it have to be through the courts? Is there another way that I can get her enrolled in school without having to take the next step and have my sister's father emancipate her (there is plenty of proof, and I do have the financial stability and capability to support her... though it'd cause major ruckus in the family)??