The nation's most selective universities have long required three SAT subject tests. But with the introduction of writing sections on the SAT and ACT in 2005, colleges have been gradually reducing the subject-test requirement.
This admissions cycle, Harvard has jumped on the two-test bandwagon, and Georgetown is "strongly" recommending three instead of requiring them.
....The writing test has been found to be a good indicator of future academic success, says Jeff A. Neal, a Harvard spokesman...
Janet Tapelye, dean of admission at Princeton, which dropped the three-test requirement last year, cites an additional reason: accessibility. Studies have shown that students from lower socioeconomic backgrounds are less likely to take three subject tests.
And, of course, no one says you can't do three.