Jbaldwin95, You'll have nothing to worry about.
I currently work as an ATPL theory instructor for a fairly moderate commercial training school.
In a class of 22, the youngest student we have is 17, we have a couple of 19 yr olds, the oldest is in his forties, and we have someone in their 50s joining in Jan. The average age is mid 20s with quite a few in their late twenties.
Genrally speaking I see the modular students are mid to late twenties and above, the integrated students are usually straight from school give or take a few years.