. >> reporter: graph vin grim is the transgender high school student at the center of what is now a supremee high court will decide whether the female born 17-year-old can use the boy's restroom despite ob objections from the gloucester public school district in virginia. >> it's hugely significant. >> reporter: cbs news chief legal correspondent jan crawford says the court's ruling could be used to resolve similar disputes across the country. >> for north carolina to texas, this decision could really set the law for how schools must treat transgender students. >> reporter: the obama administration says transgender students should be allowed to use restrooms and locker rooms consistent with their gender identities but more than a dozen states have issued ahold on that directive sparking protests and lawsuits. for the past two years, grim has been extremely vocal in the fight against his school. >> to me this is one way that -- that the school is saying we don't believe that who you are is legitimate. >> reporter: if if the ninth seat on the court isn't filled how will this affect the case.