This month, California approved its new set of highly controversial math standards. When it comes to instructional practice, Stanford mathematics professor Brian Conrad wrote a 25-page document detailing the ways in which the research cited in the framework either did not support or directly contradicted its claims. Former Brookings Institute fellow Tom Loveless documented more still, and argued that the framework would put California students years behind the developed world. But California is becoming a world leader in one department: using mathematics as a vehicle for Marxist ideology.