Fantastic quality, sports, portraits, travel, and just scenery

I am a highschool student looking for a camera that will satisfy me. I love photography and was given the chance to be the school's photographer, I am a beginner but I have been researching everything I need to know. I want a camera that will help me take amazing pictures that my classmates and teachers will be able to look at and feel as if they were there again, Highschool is a place where you should be able to look back at all the amazing memories. And I want to capture those memories for my fellow classmates. I also want to capture photos of my personal life. I will travel alot this summer and I need to know which camera is best for taking beautiful pictures, I'm considering the Canon Rebel T1i, T2i, & T3i, Which is best?