It's a good one. Though I'd like to see the
Epos version, to read the original language he used. Assuming it was changed, which we kind of have to assume, all things considered.
And if I may pick a nit (that's why we're here, after all), he was 36 when he attended that class (which he didn't necessarily want to be in -
it was his wife's idea), and about 40 when he wrote the poem about it.
I don't know how much his age, at the time of the class or at the time he wrote the poem, had to do with the tone of it though. It's pretty typical of his outsider/look-at-the-young-people poems. I get the feeling he could have written the same thing in 1945 or 1985. Or 2015, had he lived to be 100.
And 50 is the new 30, by the way, so don't feel too bad.