Tom, complete with mortarboard, is teaching a kitten the basics: "cats chase mice." But Jerry keeps subverting this lesson at every opportunity.
Writing
Jerry's lesson sabotage is genuinely clever pedagogy.

Director
William Hanna
Trivia, insights & behind the scenes
This was one of the first Tom & Jerry shorts where Tom occupies a professional role, establishing the 'authority figure Tom' template they'd revisit for decades.
The 'cats chase mice' lesson reflects post-war educational films—Hanna-Barbera were literally parodying classroom indoctrination shorts common in 1940s America.