That is the worst possible outcome for the students, and it's not great for the teachers either. Students at KIPP have been highly successful -- it ranks at the top of city middle schools in test scores, and some 80 percent of its alumni go on to college -- and it's hard to imagine that fewer hours and less opportunity for arts and music education, among other things, won't hinder that. As far as the teachers go, the union says it's responding to some complaints. But many other teachers at the school are more than happy with the tradeoff -- they get more money for more hours (if perhaps not proportionately as much as the union wants) and work in a functioning school. I'd bet if you offered that chance to all city middle school teachers -- work longer than seven hours a day (which most probably do already), get paid a little more and know you're really making a difference in kids' lives -- you'd be stampeded with applicants.