Louisiana’s top education official on Monday instructed schools to ignore new Title IX rules unveiled by the Biden administration, warning that extending the civil rights law’s protections to transgender students may violate existing state and federal law. The Education Department last week issued a final set of sweeping changes to Title IX — which prohibits sex-based discrimination at federally funded schools — including an expanded definition of sex discrimination that includes sexual orientation and gender identity. The new rules, which are set to take effect Aug. 1, drew immediate criticism from Republicans, who slammed the proposal’s transgender student protections as an attack on women’s rights.