Minnesota has long prided itself on its high-achieving students. The state has the highest A-C-T scores in the nation and it historically has had one of the highest graduation rates too. But when you talk to employers about Minnesota's talent pool, you hear a lot of concern. They say there aren't enough workers with math and science backgrounds to fill many of the state's newly-created knowledge jobs. These careers, in engineering, technology and science, are expected to be an increasingly significant part of the state's economy in the future. The jobs-trend troubles employers, who are in turn driving the debate over whether high schools are obsolete. Minnesota Public Radio's Lorna Benson has the next installment in our series.