There are basically five groupings of colleges when it comes to subject tests: (a) those that do not consider them even if submitted (majority of colleges, although many of those may require them for home-schooled students); (b) those that require them from all or the majority of applicants (a total of five US colleges); © those that recommend them (about 14 colleges); (d) those that neither require nor recommend them but consider them optional and will give them some consideration if submitted (about 50 colleges): and (e) those that accept subject tests in lieu of submitting an SAT or ACT (six colleges) Vanderbilt is in the (d) group, in that it considers subject tests optional but neither requires nor recommends them. Note that it can use language and math subject tests tests for placement after you are admitted.