TALLAHASSEE — A federal judge this week refused to toss out a lawsuit challenging a controversial Florida law requiring teachers to use pronouns that align with their sex assigned at birth, saying plaintiffs “plausibly” alleged the law violates protections against workplace discrimination. Chief U.S. District Judge Mark Walker’s ruling Wednesday pointed, in part, to a friend-of-the-court brief filed by the Biden administration in the lawsuit brought by Katie Wood, a transgender Hillsborough County teacher, and AV Schwandes, a nonbinary teacher fired last year by Florida Virtual School. The U.S.