Right, that was the implication. I don’t think they tend to do much to improve the quality of babysitting.
(Okay, somewhat harsh, but I was a teacher.)
but surely even if they did, it wouldn’t be enough to justify the cost in strict utilitarian calculations like the above?
Only if you quietly assume it has nothing to do with the important task of teaching.
Right, that was the implication. I don’t think they tend to do much to improve the quality of babysitting. (Okay, somewhat harsh, but I was a teacher.)
but surely even if they did, it wouldn’t be enough to justify the cost in strict utilitarian calculations like the above?
I don’t know, why wouldn’t it be? A high-tech wealthy economy depends on education, with all the direct & indirect returns implied.