I have an overwhelming test anxiety. what can i do before i start high school'?

Seek help: I recommend seeking out a therapist or attending test anxiety seminars. The school district may offer such interventions or you may want to try your local university or college.

Beta Blocker: Performance anxiety is a fear response that triggers the bodies "fight or flight" mechanism: The release of adrenalin into the vascular system which causes an increase in heart rate and BP and increased blood flow to muscles....preparing the body to fight or flee. Propanalol, a Beta Blocker, blocks the effect of adrenalin and can calm this anxiety and improve test performance. **See comments below