If you're planning on saving money for college, a Roth is probably not the way to go. A Roth is a retirement account for long-term investing, you're not going to want to take anything out of if for a while. You're going to want something shorter term, like CDs or a credit union with good interest percentages.
I'm in college now and my advice is the following:
1. Apply for financial aid
2. Apply for ANY scholarships you have even a remote chance of earning
3. Consider attending a state school. Private schools cost so, so much money for the same diploma.
4. Take AP or equivalent college credit classes to save thousands
5. When in college, consider taking summer classes.
Hope this helps!