OK, so... I have just started my last year of school. The courses I'm doing this year don't amount to anything great, and I hate it. It is sooooooo boring!!!

So, I thought about leaving school. But I can't start flight training just yet (for private reasons, don't ask...lol). My dad would let me quit school, but only if i do something worthwhile instead - which is fair enough.
So, I've been looking online for distance learning courses which would in some way or another come in handy for my later piloting career (getting a job, etc.). I have looked at the Open University and could really find anything. I have also looked for online ''aviation courses'', but can't find anything quite suitable. They're all like 'aviation medicine' and 'degrees in ATC'... so on so forth...
I need a course that will be worthwhile, wont take years to complete, is reasonably priced (up to £250 max), and will help me get a job as a pilot in the future. Bear in mind that I'm only 17.
Is there anyone out there who has done a course like that? Is it worthwhile?