Assuming your letter is correct, try:
19d Faith (Roget's New Millennium� Thesaurus; Main Entry: school; Definition: philosophy ; Synonyms: belief, creed, faith, outlook, persuasion, stamp*, way)
19d Prime or Guide (op cit; Main Entry: school; Definition: teach; Synonyms: advance, coach, control, cultivate, direct, discipline, drill, educate, guide, indoctrinate, inform, instruct, lead, manage, prepare, prime, show, train, tutor, verse)
Otherwise, try Train, Class, Group, Party, Creed.....