The Oakland Athletic League - OAL, Middle School Basketball League is the most exciting middle school basketball league in Northern California â?? Oakland Section! In partnership with The Curry Brand and Under Armor, we offer programs for boys and girls, ages 11 â?? 13, within the Oakland Unified School Districts and Oakland Charter Schools. The OAL is committed to providing quality teaching, training, and playing experiences while implementing the ideals of good sportsmanship, honesty, commitment, self-respect, and respect for others. Our goal is to develop future generations of basketball players who represent the game, themselves, and the community with the highest level of character.