K: 3v3, no flags, focus on throwing and catching, walking pace
1st: 4v4, flags introduced, basic passing, jogging pace, simple rules
2nd: 4v4, full flag rules, basic plays, running pace, position rotation
3rd: 5v5, intermediate plays, defensive strategies, competitive game play
4th: 5v5, advanced plays and routes, complex strategies, full competitive rules, student coaching