How can I go to school online if I have no money?Also do I have to get out of my school now before I singe one for one online?

Most online high school or other grades are normally considered "home schooling" so you can't do anything on your own, your parents would have to decide to do this, and have the time to spend with you to help and to monitor tests and some other subjects.

Unless you are merely takeing an extra class for some reason, you would have to follow your states laws, for example in GA you have to notify the school board and the parents have to meet certain ( but liberal ) guidelines. So you get enrolled in the new school, notify the school and then start the new online school.

Depending on the type of class work and such, look for a school that has a school number for applying to college and be award of requirements to still have to do standardise testing