I don't think anyone is telling or advising you Not to get the neuro-psych test, by all means get it!
And, REALITY CHECK, forget sports, until a real expert clears you!
If you're missing a lot of school, why would you do any different? Unless I'm reading you wrong... if so, sorry.

I had a tbi in 98, I've lost two business's my family, my home, and while I'm somewhat better, I will never be the same.
(Protect your brain at ALL COSTS, they're not going to be doing transplants for quite some time!)

Get in touch with the national brain in jury association, and your state's. Get info and learn all you can!
Go to Amazon.com, and your local library, and do all the reading you can on this injury, the newer the better.
You can get books by doctors, lawyers, and victims. and more...

Some of these books are downloadable, at iTunes for instance, because some of us have difficulty reading for too long. But, you can load it on your iPod. Or, burn a cd.

I wish you the best!

Pete