"Math, Greek, Latin, Poetry"
...Cotton Mather's 4,500 page manuscript magnum opus, the BIBLIA AMERICANA, left unpublished at his death in 1728. While getting his 2nd B.A. at SDSU, he worked in the SDSU Math Department's drop-in tutoring room, explaining the math he learned at UCSD (B.A.) to all comers, at all levels, with all backgrounds, and with all different communication styles...
10+ subjects, including SAT math