@nelmagriffin thank you so much for all this information, I really appreciate. most people have just said I have no idea and this is too expensive, without helping with any information about how to move forward. I have spoken to the local high school and if she does decide to come for a year, since it is public school there is a negligible cost to it (since it is included in our taxes already, I think $20 for administration).
I know when I moved to the states and started university we had to do the SATs and we also paid out of state tuition for 2 terms and had to petition the school to allow us to have instate tuition after that, but we were on green cards.
I need to research more about pharmacy and see what she actually wants to do, I am not sure if she wants to be an actual pharmacist or just work in a pharmacy, but she may change her mind completely later. In macedonia there are limited options and so she chose pharmacy. Once she comes here she may realise she can choose anything.
I know if we go through an exchange program she can only stay with a host family, but my hope was to become approved as a host family so she can stay with us and possibly continue hosting students from Macedonia.
Thank you again for the useful information, I was starting to feel quite discouraged by the folks who were just saying negative things.