This is actually quite a solid site! The favicon is a bit small and the background is too bland. Maybe you can lay a very light navigational chart into the backdrop, really low opacity, just to give it that additional touch of authenticity. (it's something i continually fail to do at my aviation sites)
Bring a few videos onto the front page as well. A welcome video, that introduces the school and eventually a video captured with a first time student, after all, it's your target group. Last but not least, get someone who just obtained their licenses through your training and have them speak about it.
Other than that, nicely done.
M.