The Long Island Rail Road (LIRR) used to host MBA classes for commuters. “Classes were held in a re designed car containing black boards, an audio‐visual system, microphones and two rows of desks facing a raised platform.” Quite literally: distance learning! https://www.nytimes.com/1972/10/03/archives/commuterschool-mba-given.html
I recall Bear mentioning this in at least one of his books. (I'm away from my library at the moment.) It was brilliant. I spent 20 years riding the Metro and I didn't even get a pin.
TRANSCAER Course - Passenger Train Emergency Response Norfolk Southern Whistlestop Tour (2009) Several years ago I went to a free emergency response training event where a train went from city to city and was used as the training cite. A box car was converted into a class room and you even did training on top of the tank car. TRANSCAER (Transportation Community Awareness and Emergency Response