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Dozens of suburban Chicago families, perhaps many more, have been exploiting a legal loophole to win their children need-based college financial aid and scholarships they would not otherwise receive, court records and interviews show.

Coming months after the national “Varsity Blues” college admissions scandal, this tactic also appears to involve families attempting to gain an advantage in an increasingly competitive and expensive college admissions system.

Parents are giving up legal guardianship of their children during their junior or senior year in high school to someone else — a friend, aunt, cousin or grandparent. The guardianship status then allows the students to declare themselves financially independent of their families so they can qualify for federal, state and university aid, a ProPublica Illinois investigation found.

“It’s a scam,” said Andy Borst, director of undergraduate admissions at the University of Illinois at Urbana-Champaign. “Wealthy families are manipulating the financial aid process to be eligible for financial aid they would not be otherwise eligible for. They are taking away opportunities from families that really need it.”