Aslo Alex gliding tends to be an all day affair which you can be dropped off at and picked up later. You get way more entertainment for a teenager than powered.
Appart from anything else it gets you out the house and away from your xbox.
Also have a look at air cadets
Air Cadets - Home
You can get free flying through them and also scholorships for both gliding and powered.
I know it might seem wierd thinking about what your going to do after school just now. But...
Getting a job isn't only about how well you do at school. Employers also look at what type of person you are as well.
If you want to go on and be a commercial pilot which is what I am. You need to stand out from the rest.
People look at what you have done in your spare time to do with aviation and also your other hobbys. Queens Scout award or Duke of Edinburgh always look good. Sport up to a point, football doesnt really make a difference in my opinion but there are quite a few keen Rugby chief pilots.
14 you have your life infront of you don't get focused about only one goal. Yes try and move towards that goal but don't fixate and block off other avenues just for that goal.
Air cadets and gliding will look good for most careers. And will also stand you in good stead if you apply for any flying scholorships which there are a few about.
Flying Scholarships - GAPAN
The Air League » Flying Scholarships
And this might be of interest as well
The Air League » Youth in Aviation