Japanese language school for adults

I am thinking about taking some time off work and study Japanese in Japan for a few months. The only problem is, I am now in my late 20's, so I will probably feel very old compared with the other students at a typical language school.
Anyone know about some language school (in Tokyo or any other major city) more geared to adults? Or at least where not all students are under 22, lol.

most language school students are over 22 i'd guess.. most of them are either university students taking off a year before finishing their degree or people who are trying to get into post graduate studies in japan or go to some kind of technical college. if you're near 30 you'll be in the upper end of the average age range which is probably around 23-24-25 years old

Ok, I should be ok then. I'm 27 so i'll be older but not that much older, haha.
Thanks for the help!

I'm thinking of doing the same thing too.
I'm 26 and I want to take time off work for 2-3 months.
It doesn't matter if people are younger or older, you're there to learn. there should be a mixture of ages

I've heard ok reviews from people about arc. It's in tokyo.
http://en.arc-academy.net/