1961, initialism for Scholastic Aptitude Test.
A test that purportedly measures the aptitude of high-schoolers for college. Originally devised in 1926, it was not widely employed by colleges to select students until the 1950s and 1960s.
Note: The SAT is controversial. College admissions officers have relied on it, but critics contend that it contains cultural biases that work against the admission of African-Americans and other minorities.