Former Wall Street mogul Peter Scarbrow becomes headmaster of Mount Horizon, a progressive school for teens at risk, high in the mountains of the Northwestern United States.Former Wall Street mogul Peter Scarbrow becomes headmaster of Mount Horizon, a progressive school for teens at risk, high in the mountains of the Northwestern United States.Former Wall Street mogul Peter Scarbrow becomes headmaster of Mount Horizon, a progressive school for teens at risk, high in the mountains of the Northwestern United States.