thats a opretty new Bus... first question would be why did a school get rid of such a new unit.. (were there emissions or other issues with the Maxxforce DT?).
secondly.. thats a full-on emission control bus.. the first few years of those ended up being pretty problematic.. I would do some research on emissions controlled busses before buying one..
the Maxxforce DT was one of the better emissions engines.. (make sure its NOT a maxxforce 7 V-
.. if that bus is a CE300. and it should have labelling on it as to what engine it has..
what size tires? im guessing with the GVWR that its 11R22.5?
the transmission and gearing are good... with the above mentioned tires you would be running 2100 RPM at 65 MPH in 5th gear.