That was fun.
The school that I attended (from 1st grade to 8th grade) had some tv sets (2-3; at least one colour) in the phisics laboratory, but only once a teacher turn it on for 1 minute... I think we've seen "The young and restless" (we had it Romania for at least 10 years).
16 mm projector... no, through all that they mention it in this catalogue (I got one... if I wasn't a lazy bone, I would have had picked it from the post office yesterday):
https://www.okazii.ro/catalog-de-mat...962-a187315263
and my school was quite a good school. O.k., maybe 16 m.m. was obsolete in schools by the '90's, but we dind't even had any slide projection
Instruction for 16 m.m. projectors (1959) - school, yeah:
https://www.youtube.com/watch?v=8UgRJ4V6H8M