As a side note: I suggest you better try to find a unique identifier for each student and restructure your data:

%students = (
  1111 => {
    name  => "Guy",
    college => "Yale",
  },

  2222 => {
    name  => "Gil",
    college => "Harvard",
  },
);
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Keep in mind that equally named persons are not that rare, even in the same university.