Summer school programs offered by colleges are a good way to get introduced to campus life. These programs are usually offered to high school juniors and seniors, though some colleges offer the program to all high school students. You may have the opportunity of getting two core classes done before the school year begins. These can help reduce your courseload, act as a buffer against failing a class and help you graduate early. If you plan on living on campus, you'll get a taste of campus life, which could make it less overwhelming when you begin college.