How many SAT Subjects Tests can/should one take in one sitting?
Students are allowed to take as many as three SAT Subject Tests on a given day. They cannot take SAT Subject Tests and SAT on the same day. There is evidence to suggest that there is a performance drop-off on the third of three subject tests taken on a given day. It is best to know one’s own personal limitations when deciding how many subject tests to take on a given day.