Little Dovid acts up in class. Rebbe warns him once, twice, and then gives him a “frask.” Dovid cries, then sits quietly and behaves. Dovid’s parents support the rebbi’s actions and in fact punish their son as well for misbehaving.
This was the yeshiva world norm, up until about ten years ago, when “on the fringe” teens and child molestation became subjects the frum world had no choice but to address. Now, with more and more cases of emotional and sexual child abuse coming to light, there has been a lot of talk about how physical, if at all, a rebbe should be towards his young talmid.