Rank them according to, oh, 5-10 things you think are important. Two of those should be Cost (run NPC!) and Available Majors (you want a school with multiple majors you like or might like, since you may change your mind or not be able to get into your top choice).
Other ideas:
- Class sizes
- Environment (campus look/convenience/size, surrounding wilderness or city/town, etc.)
- Location/weather
- Grad rate (4-year and/or 6-year)
- Social vibe (try to read up on the Greek/party scene, sports fandom, activism, clubs, and things to do around town/city)
- Ease of changing majors (this will require some digging)
- Dorms/food
- Curricular style
- Academic calendar
- Acceptance rate and average GPA/test scores (to help you sort reach/match/safety)
Once you have evaluated them according to your formula, pick a few reaches, a few matches, and at least one safety – 7 schools. Or 5, 10, however many apps you have the time and money for. The one rule is, you must have at least one safety.