When can I leave the test centre after the SAT math 2 test?

lp1822
Tue, 20 Nov 2018 23:06:13 +0000

S is going to take SAT math 2 test on Dec 1. ticket says that he should get to the test centre at 7:45am? I know the SAT math 2 test takes 1 hour. When can he leave the test centre after the test?