There may be some truth to this, but it is not as if someone's education on these matters is limited to the ages of 18 to 22. A lot of kids will have been in multiracial and multiethnic environments already. Lettered in basketball. Vice president of class. Organized fundraising campaign for Jewish Community Center.
Mom works as part-time waitress.
Leader of church youth choir. First woman in family to go to college. Built his own ham radio and personal computer. No extracurricular activities except caring for six younger siblings. Girl Scout, lettered in three sports.