For college of arts and sciences students, they "strongly encourage" taking the SAT II test in a foreign language in May or June (if you previously have not taken it).
It is used for placement in a level for your foreign language. Everyone in arts and sciences has to be proficient up through an intermediate level. There also is a placement test available during summer orientation, as well as an online placement test in a couple languages (which apparently they would prefer that you take by early June).
If I'm interpreting the website correctly, it sounds like you are placed by whichever of those tests comes out better???
I believe the test is around $45 if you sign up for it a few weeks in advance. The June SAT II test date is Sat. June 4.