And the Supreme Court said Friday it will take up its first-ever case on transgender rights, when it considers whether a transgender boy has the right to use the boys’ bathroom at his high school. Seventeen-year-old Gavin Grimm of Virginia is challenging the Gloucester County School Board’s requirement that students use facilities corresponding to their assigned gender at birth. Grimm says the rule left him humiliated and caused him to stop drinking liquids so as not to urinate during the school day. Justices will rule on whether the Obama administration may ban discrimination based on gender identity under Title IX, a law than guarantees equal access to education “on the basis of sex.”