firepoint525 said:
Interesting that, given his age, he was playing a high school student while he was in his mid-to-late 20s, which would have been his age when Kotter was on the air.
Well, he would have been 23 when the show began, and 28 when it ended. That's not particularly unusual. There are a lot less labor law issues if you hire a young adult, and if the show has a long successful run, that young adult is pushing 30 when you're done.
A couple other examples - Luke Perry was 25 when
Beverly Hills 90210 started its ten year run, so he was 35 when it ended. Jason Priestly was a bit younger - 21 at the start, and 31 when the show ended.
It's make believe after all, and as long as you look young, it'll work.