Case will send out emails soon asking if you want to be on the WL. Contact your Admissions Counselor (Contact | Undergraduate Admission | Case Western Reserve University ) and (if this is the case) tell them if you are admitted you would attend. At this point they have two objectives:
Fill the class and the housing (but not more students than housing)
Protect the yield… they don’t want to offer you admission at this point unless you attend. Yield is the ratio of offers of admission to enrolled students and is used, amongst other things, to rank schools.
Case provides housing to all freshman so they need to make sure they don’t have too many or too few freshmen…
Read this to see the % of students accepted off the WL …recently varying from 0 to 22%