Students are free to register to take the ACT and SAT anywhere they like, but students must take the PSAT here at Clarence. Conventional wisdom would suggest testing at Clarence, however, you should know what you're walking into ... literally. Students at Clarence test in the gym. You test in rows of desks with at least one hundred other students (probably more). If this isn't the ideal testing situation for you then you might want to consider testing at another school. Some area schoos test in classrooms. The smaller setting might outweigh the unfamiliarity of another school for some students. Clarence's test center code for the ACT is 196950. Clarence's test center code for the SAT is 33326.