Hundreds of prominent professors — including top names from CUNY, NYU, and Columbia — have signed a letter blasting the erosion of math rigor in grades K to 12. Arguing that curtailing advanced math programs puts American kids at a global disadvantage, the coalition called the movement “the height of irresponsibility.” A total of 746 math teachers and professors across the country signed the new missive, warning that enfeebled math curriculums would have dire consequences down the line. The teachers — including two CUNY professors, nine from Columbia University, and 13 from NYU — argued that kids need exposure to...