Answer: kaplan

AnswerCrossword Clue
KAPLANKotter player on TV
KAPLANBig name in test preparation
KAPLANComic-actor Gabe
KAPLANGabe of "Welcome Back, Kotter"
KAPLANSurname meaning "priest"
KAPLANActor Gabe of "Welcome Back, Kotter"
KAPLANHe was TV's Kotter
KAPLANU. S. physicist.
KAPLANFilm director Jonathan
KAPLAN"Mr. Clemens and Mark Twain" author Justin
KAPLANGiant in test prep
KAPLANGMAT class offerer
KAPLANTesting surname
KAPLANCompetitor of Peterson's and Princeton Review
KAPLANBig name in test prep