It seems this is only happening to binned (and/or premade, but I think just binned) apartments. I don't remember if there was any "fix" for it, as the kids can theoretically just walk to school. But, this was the issue, and you're not alone.
So any apartments that have been in my lots&houses bin will be like that? How in the heck does that make sense? That's all of 'em! Damn them and their damn borks.
Yesterday I tried out this theory that school buses won't show up with the binned appartments. I picked an appartment lot
that only has 2 appartments and the school bus does show up.
Maybe it is just a couple of appartments. Maybe I'll check out those other appartments.
I only play with the Stereohack, alfixes, notownieregen and LordDarcy's SP fixes for AL.
EDIT: I just played with 4 apartments in Belladonna Cove. My test family Gavigan.
In the appartments Dynamite Duplix and Boothbay Apartments the school bus shows up.
But in appartments City Center Lofts and Main Street Mobile Homes the school bus doesn't show up.
So my theory is that a neigborhood can't have 2 of the same appartments, because City Center Lofts and Main Street Mobile Homes are already in Belladonna Cove when you first play that neighborhood.
Can anyone verify that they have the same problem?