Little House on the Prairie (1974)

S5E11 The Cheaters

Andy Garvey's mother feels ashamed of his academic struggles and decides to enlist Nellie Oleson as his tutor. During their sessions, Nellie shares her secrets for achieving top grades, pressuring Andy to keep her cheating a secret. Eventually, Andy confesses his involvement in the dishonest scheme, prompting his mother to intervene and ensure that Nellie cannot cheat on their upcoming test.