What's not true, that it's a private school bus? Since public school is closed in St. M's today, how could it be a public school bus with 2 students on board? No public school bus number in St. M's is over 744, unless it's a substitute bus.
sorry, someone has mis-informed you. The 2 occupants of the bus included the driver and another individual, not 2 students. and for future reference, there are SMC public school buses that are labeled greater than 744 (I only know because I once worked in the school system)
It's possible that the bus was out doing driver training, being taken to a mechanic shop, being returned to the operator for weekend parking, or a multitude of other reasons.