How to do my hair for school?

So i have really weird hair. Its like REALLY thick, and I have a front fringe and it JUST touches my shoulders when its out. Its straight too. So like when I have a shower and go to school its all good, but like after 2 hrs, its still straight, but it poofs up a little. I HATE THAT! How should i do my hair after i go to school> I dont want to tie it up, its so boring. HELP!