in high school, we had no school instruments, but the music teacher, Mr. Mordecai (a Welshman) played piano.
At my high school we were short of a mathematics teacher, needed to present a special, bridging maths course to senior students intending to take maths 101 at university the following year.
So, naturally, the school's music teacher was co-opted (much to his displeasure) to plug the gap!
In the event, the course stood no chance and soon folded as the attendance quickly fell away.
When people talk of the "good old days" in education, they are not strictly accurate
.
For me, personally, mathematics was always a mystery (just as it was for many of my "maths" teachers)
One of my good friends, recently migrated from Holland, claimed our maths course was two years behind that he himself had undergone in Holland, before emigrating.
He spent much of his class time comparing notes and solutions with our maths teacher. When they could not agree, the school's senior maths master was consulted during recess.
My classmate went on to a PhD in mathematics, and an assistant professorship in one of the Raleigh, North Carolina universities (where he spent his academic career, "publishing or perishing!").
Only three other students in this class passed the examination in matriculation mathematics at the end of the year (out of a total of 60)
I was one of these, not that it did me any good.
I recall our lecturer taking the mathematics 101 class. His modus operandi was to firmly face the class with his back and then to cover the blackboard with miniscule notes whilst muttering an exposition sotto voce, to himself. below anyone's threshold of hearing
(In retrospect, I now wonder if several of my lecturers weren't actually on the autism spectrum.)
Ah well... the best days of your lives...some say!