Twigg-SKO
Senior Member
A cut and raise below the window should do it
That's how I would do it.
The other benefit is that you raise the windows too. This is a good thing, as they are too low in a standard school bus.
If you want to retain school bus windows, this has to be the cheapest and easiest way to do it, as once the roof is up the old windows pop straight back into the holes they came from.