You could submit a freedom of information request. However, they might not give you exact numbers, to prevent people being personally identified from the data. They are also not obligated to accept your request, if they think it would take an unreasonable amount of time to fulfil.
Robinson is perhaps one of the less competitive colleges - it's the kind of college that people get pooled to, rather than pooled from. Perhaps it has built up a stereotype at your school? But they're not going to be discriminating on the basis of race in admissions. That would be quite illegal.