Family Ties S04 E07 My Tutor

"Laughter. Tears. Politics... MEET THE KEATONS."

Alex hires a tutor to help him with math, but his ""teacher"" turns out to be a 13-year-old genius who suddenly becomes more interested in Jennifer than in helping Alex. When Eugene, Alex's tutor, meets Jennifer he loses his concentration and Alex comes up with a scheme that will benefit both him and Eugene.