My boyfriend just broke up with me..through a text?

That was really immature of him.
I understand you want answers.
What happened? What went wrong? What did you really mean to him? Why did he do this? Why why why? Etc.
You feel disrespected for what he did, and you want some kind of closure. And answers to questions, because you think it will give you peace.
But it usually doesn't work that way. Like when you called and he said you don't like the things he likes. It hurt you in a way, didn't it? And by his answer, it only created more questions in your head. What I'm trying to say is, the answers you get won't make you feel better, and it won't give you peace. Some answers might even ruin you. Like, hurt your self esteem. Make you feel even more crappier than you already do. It might make you feel like you don't deserve to be in another relationship.
So, I suggest you let it go. Don't try to find answers. It is already clear that he doesn't want to be with you. And by him not even trying to talk it out first, clearly says he doesn't respect you enough, or he doesn't care that much. Whatever his reasons, you don't need to dwell on it. You don't need to be with someone like that anyway. You know you deserve better.
Look at it as an experience. Learn from it, and move on. Just tell yourself, it was good while it lasted, but it wasnt meant to be.
Get yourself back together, and start a new day, as a "single" hottie :) Wear your favorite outfit - one that makes you feel pretty. Go into school with a smile, and a positive attitude. Don't even bother talking to him, or saying hi.
Seeing you are "happy", will make him wonder, and question HIMSELF-- HE will end up with 101 questions. Trust me.
It might be hard to smile sometimes, and laugh. But it's ok. Just fake it :)
You can always talk to your friends, or your dog, later on when no ones around.

First of all, he is stupid. He IS losing out on a great girl, remember that. It IS his loss, and he will realize it and he will regret it. It is normal to feel how you do, but you will get better. In the end, he will feel worse than you because he is losing you.

His reason makes no sense. So you are definitely right in wanting to know the reason. However, it doesn't really matter because he did break up with you. Nothing he says will make you feel better, so I would just ignore him. This will irritate him, and maybe wake him up as to what he is losing.

Not knowing will be painful, as I have experienced this just recently, and still am wondering what the hell changed or went wrong. But its best that I don't know.

It IS his loss, and chances are he will be begging you to take him back.

ask him, you have all the right to know! Live your life like before, you don't need to avoid him, you did nothing wrong. Hope this helps.:-)