Los Angeles students and teachers return to class for the new academic year Thursday under a cloud of apprehension after a summer filled with immigration raids and amid worries that schools could become a target in the Trump administration’s aggressive crackdown.

School officials say that the student, a 15-year-old boy, was detained in an "alleged case of mistaken identity."

LAUSD Supt. Carvalho expands aggressive defense of students and their immigrant families — including new collaborations with L.A. Mayor Bass and other area cities.