All high school sports rules are administered by the National Federation of High Schools (NFHS). There are important differences in the rules/laws between club, scholastic and collegiate soccer. NISOA publishes a document each year that compares the rules between high school, college and club soccer. The document is called “Comparative Study of Rules and Laws”.
FHSAA makes a few significant modifications to the NFHS rules. You must know these in order to pass the online exam. Those modifications are published in the FHSAA document titled “FHSAA Soccer Sport Manual”.
Both of these documents can be found on the Downloads page.