[Jeffhs]

That TV looks exactly like the ones we had when I was in grade school, though ours were black-and-white sets in metal cabinets on carts. Cleveland's educational TV station had just gone on the air in 1965, and the sets in my school received the station on channel 4 (a downconversion within the master-antenna TV system in the building, since the station actually broadcast on UHF channel 25). I doubt that the UHF tuners in these sets were used at all--in fact, I don't think these TVs were used for anything else but educational programs, so the VHF tuner was probably set on channel 4 and left there. There was a notice, however, on the sides of the TV cabinets stating "to watch channel 25, turn to channel 4", so the sets may have been used for early-morning network newscasts as well.