Temple will not send you much until maybe around June.
One thing you might be able to get started on would be getting your physical and immunizations up to date. I'll attach an older version of these forms but the new ones that you get will probably be the same.
The only things you won't need right now would be flu shot and PPD test. They'll have nurses come to the school to do those and you should probably just get them done every year with your class.