He's your father, and right now you're in school, and he's your teacher (of course) He teaches math, and every time someone gets a question wrong, he hits them with a ruler but not you because he's only nice to you because.. As i explained in the beginning, he's your dad

The principal is still as strict as ever, the bully still messes with you, first prize still corners you in the hallways and playtime, well playtime is just playtime

Baldi allows you to LEARN from mistakes..

but without the discipline