High schools vary from place to place, so colleges can't look at grades alone.
Standardized tests provide a consistent way for colleges to evaluate students. Most colleges require you to take one of the most common tests, the SAT® or the ACT®. Check with the colleges you plan to apply to for their testing requirements.
To take these tests, you should be armed with more than a #2 pencil. Both major testing organizations offer lots of resources to help you prepare and study. Both also offer preparatory tests you can take early. Your local library and bookstore have books that can help you prepare. And if you don't do well the first time, don't panic — you can re-take the tests to try to raise your score.
The most common tests, with links to their Web sites:
The tests above require registration fees. The fees can vary depending on the test options you choose. Check with your high school guidance counselor to see if you qualify for a fee waiver.