In the 1960’s progressive education pioneers like Herbert Kohl experimented with teaching techniques that eventually became known as “the open classroom,” which traded in Dick and Jane and instead used students’ real life and real experiences as the basis for educational lessons. Today, these teaching methods have become widespread and are often flashpoints for the furor of conservative education activist. In this final segment of her series “Carefully Taught,” producer Barbara Bernstein looks at the underlying conflict of values that is fueling the debate over how students should be taught.