https://collegereadiness.collegeboard.org/sat/register/dates-deadlines
Families have wanted a summer test for years and SAT is finally delivering, in part to get back part of the market they have lost in recent years to the ACT that will again offer its first test for the year in September. If the August test meets your schedules, then register early as I predict it will be popular. Of course ,the SAT test in August was at its most basic level made possible by schools opening before Labor Day.