My son wants to major in Computer Science. While we have not visited any campus yet, I am able to pick 20 schools from safety to super reach after I checked out about 150 school websites.
You can find out the information about faculty and courses from the websites. If you like what you see, write down the name of the school. After you visit 200 schools, you could get some ideas where you want to apply to.
Hope this will help.
