I started elementary shcool in 1970. The school was built in 1965 and every classroom had Magnavox table top B&W's on those tall carts. Every classroom was also wired with cable tv as where I grew up is about 90 miles from Boston and surrounded by hills blocking out most channels. We very often, probably weekly would watch educational programs on NH public tv. Also any time we were stuck inside for recess due to the weather on would go the tv and we'd watch some mid morning game show
The school also had 1 RCA Lyceum color tv that was connected to a Sony open reel VTR that was used for special programs.