Like knowledge, education is a little suspect. The most highly educated people in Tristram Shandy are also the stupidest: the scholars who endlessly debate pointless questions; Walter Shandy, who's so busy reading books that he forgets about common sense; and even Tristram, who has a hard time getting out from the shadow of all the books he's read. But Tristram's way too cool for school. Everyone in Tristram Shandy is self-educated, and it doesn't seem like the best choice. We might romanticize the idea of the self-educated man, but education needs to be tempered with a solid dose of good sense.
Tristram Shandy is Tristram's Trista-paedia—his book written for the education of his readers.
In Tristram Shandy, public school seems to produce better people because it exposes you to different ways of thinking.