The problem with this notion is that elementary school teachers need to be generalists; subjects don't really start getting "split" subjectively (with different teachers) until middle and high school.<p>[Edit] Citation FTA:  <i>A new study suggests that elementary school may be a breeding ground for this anxiety. The study found that when elementary school teachers, who are primarily female, displayed a high level of anxiety about math, that skittishness was transmitted to their female students.</i>