I hear plenty of horror stories about the unreliability of new school buses' electronics. Like so many vehicles these days they have CANBUS, great when it works but a nightmare to troubleshoot when the electrons don't want to cooperate. Maybe because school buses these days are built as cheaply as possible, the electronics are the first to suffer? Some school districts in CA are still running old Crowns, older than mine, because they are more dependable and economical than their newer buses.
I'm not impressed with the flimsy plastic dash panels and instrument clusters of new International/Amtran and Thomas school buses. I guess this doesn't matter if they're designed for only a fifteen year lifespan and a few hundred thousand miles.
Get a Crown or Gillig - handbuilt, tough, simple, reliable, good to drive, what's not to like? (Just kidding!)