UofA worried about future acceptance or not?

<p>Hello, I'm currently a sophomore in H.S, but I just started looking into some colleges. My sister got into University of Arizona and I went with her to visit. I fell in love with the campus, but I had just a general question. Is it pretty easy to get into UofA or is it hard? My sister had average grades and GPA but I struggle with GPA it's around 2.78 but I am working hard to get it to at least a 3.30 or 3.2 by graduation. My counselor says I'll get around a 23 or 22 ACT. would I have a chance? It's literally my dream school I basically just want to know if it's a hard school to get into? Do you know the lowest GPA they might accept and if I have a chance? If I keep going up with my GPA from a 2.78 will I get in? I messed up freshman year but I'm ready to change it around. Do I have a chance?
Thank you! Please help me I'm worried.</p>