Tests for constitutionality of religious issues

Part One:

(A) Read over the three tests for constitutionality of religious issues addressed in the textbook. Which one of the three tests do you think is the most appropriate to determine if an organized pre-game prayer by a public high school basketball team in its locker room would be successfully challenged?

(B) Would there be any difference if the pregame prayer was made over the loudspeaker before the game?

Part Two:
How would a rule that demands all football coaches in a particular state must have played organized team football be challenged?