Actual, socially beneficial conformity is produced just fine on its own with how humans generally are social group animals that want to fit in and not be embarrassed from doing weird, unfair, or harmful stuff.

Simply interacting with other people is what makes humans follow meaningful rules. That happens whether or not we're rewarded for being good dogs in the eyes of adults.

Conformity to arbitrary procedures and sets of rules is not helpful anywhere, and that's what school gives us.