A conservative legal group is urging parents to use their rights under a little-known 1974 law that gives parents a wide berth to review public school curriculum and opt out of commonplace surveys used by third-party contractors.

America First Legal outlined in a guide how parents can use the provisions of the Protection of Pupil Rights Amendment, a largely unknown law that was passed in 1974 and updated most recently in 2002, to view and expose critical race theory and other controversial curricula.