The SAT is required of all juniors as part of the Michigan Merit Exam. For students wishing to take the test early for practice, or to retake it, registration is completed in the student's College Board account. Students that are eligible for free/reduced lunch are eligible for a fee waiver - see Ms. Smith.
This is a free service for Michigan residents. There is a lot of great information on this site, but I want to point out that there are tests and tutorials which can be reached by clicking on "eResources", then "LearningExpress Library", then "College Admissions Test Preparation".
This is also free for students. Besides their great tutoring resources, students can link their Khan Academy account (be sure to use a personal email address) to their College Board account for personalized practice modules. [Hint - that also gets them an entry into the Big Future Scholarships if done in the spring of their junior year through the fall of their senior year.]
Students interested in participating in Division I or Division II athletics in college need to check out the NCAA Clearinghouse website for detailed requirements. You must meet core course, SAT, and GPA requirements to eligible for sports at those levels. If interested, you need to send in an application after your Junior year grades have been posted. Go to this site to get more information and to register: web3.ncaa.org/ecwr3/