Your school is lucky to have you! The book cases should be easy and free! The district has a surplus website that the school staff has access to. They can either shop off the website for book cases, or call surplus directly (you must be a district employee to do both). Shopping off the website may take a long time, our PTA ordered book shelves in October and they weren’t delivered until April. I’m told calling directly with your pleas for supplies gets faster action. Good Luck, there should be tons of surplus with all the schools that have been closed.