The New York Post reports that according to a study by the non-profit organization Education Trust, one in five teachers at poor New York public middle-and-high schools lack adequate training in the core subjects they teach: math, science, and English. This is contrasted against only three percent of teachers in wealthier schools that lack proper training. The organization claims this is reflective of a growing trend across the nation where the disparity between rich schools and poor schools, where students at the poorer schools are getting shortchanged when it comes to qualified teachers. This study mirrors an analysis by The New York Post that found that most experienced teachers tend to gravitate towards schools with more affluent student bodies…