An excellent free resource for ACT test prep is the practice booklet issued at the time of registration. This booklet contains practice questions that are representative of the types of exercises on the real test.
The school guidance counselor is also a resource for free test prep materials. This person is usually responsible for overseeing the registration process and may have access to study and practice materials. The counselor should also have information about the availability of free ACT test prep classes either at the school or someplace nearby.