There was some kind of (semi-)professional system all schools had before they went all Video 2000.
I have never had any personal contact with Betamax!
By the time Betamax had the longer running tapes, the VHS was by far the most widespread system (due only to the longer tapes!)-and had in effect won the war (On the US market) despite the lower quality -the rest of the world just followed the (at this time) cheaper product.
(IIRC there's a videotape-war article on Wikipedia)
I have never had any personal contact with Betamax!

/.../ I wonder if Beta had survived, and not VHS, if with time, they would have found ways to make longer-running Beta tapes, like how VHS eventually had T-120, T-160, and T-180.
By the time Betamax had the longer running tapes, the VHS was by far the most widespread system (due only to the longer tapes!)-and had in effect won the war (On the US market) despite the lower quality -the rest of the world just followed the (at this time) cheaper product.
(IIRC there's a videotape-war article on Wikipedia)