it all depends on individual circumstances. I have a daughter who is turning 3 in January and cannot wait for her to join baby class. I always pity her when I come home early and find her bored to death having played with her toys, watched TV,slept a few hours etc and itching for something new to do. There are very few kids in the estate during term days and the only company she has are mboches.
Baby schools are very instrumental in honing their social skills early on in life. I believe she has more to gain going to school than bumming in the house all day.
It is a curious fact that of all the illusions that beset mankind, none is quite as curious as that tendency to suppose that we are mentally and morally superior to those who differ from us in opinion.