I would guess Koda Kumi is a music teacher. =P Although judging by her "activities", biology or gym might be more accurate.
(Well, I'd rather have Kouda-sensei~ I'd get to dance all day! =D)
Any teacher below age 50 would be fine for me.... damn all those geezers !! What pushed them to teach in such age !!
I don't know - I've actually had some very good old teachers; they're not all terrible. I've had some awful younger teachers too (although rarely). Maybe they're just out of touch or something?
Never had a young teacher in my whole life...never....well - once, but in my least favourite subject
Ow. XD A lot of my teachers have been young... some barely out of university. xD Still older than Kuu, though. (Who is twenty-four now, so... twenty-two in that PV, maybe? Twenty-one?)