Armed Services Vocational Aptitude Battery (ASVAB)
The ASVAB test is a free test offered by the federal government and measures aptitude in a variety of fields. It is required for entrance into the military but is often used for its information about what careers students would excel in. The test is free to take through a military recruiter or it can be taken on the Opportunity To Excel Day (OTED).
ASVAB website
ASVAB Fact Sheet