Mama, don't let your babies grow up to be Wall Street quant cowboys. My alma mater, northern Virginia's Thomas Jefferson High School for Science & Technology, is in the papers for offering advanced postcalculus math courses. (Yeah, yeah — tell me something I didn't know in 9th grade.) Why is this news, two decades after the school first offered such classes? Robert Sachs, a college professor who also teaches complex variables at the school, suggests that his students' math skills have potential for good or evil. Some graduates pursue careers in science or engineering, he tells the Post , while others "become the math financial people who aren't getting good press these days."