Re Flatbush27: There’s more to teach than just the mechanics of drinking. When a bachur drinks, he should be around his rebbe and in a good olam. He should feel the high from Torah and letting loose a bit in a happy way.
But there’s this catch 22 afoot now: as younger kids start getting involved in this mitzvah (unlike last generation) yeshivas close the mesivtos for Purim for good reason; they can’t be responsible for the out of town kids. So the kids go home and don’t have this positive hashpa’a to enhance their drinking. They don’t know what it should be like and as they do it every year, they don’t gain from last year’s experience. I see with my kids B”H that there was something positive going on, despite a mother’s misgivings.