Input (grade 8): After leaving the underground, he earned an M. Ed from Bank Street College in Early Childhood Education (1984), an M. Ed from Teachers College, Columbia University in Early Childhood Education (1987) and an Ed.
Output (grade 9): After he left the underground, he earned an Masters in Education (M. Ed) from Bank Street College in Early Childhood Education (1983)), an M. Ed from Teachers College, Columbia University in Early Childhood Education (1987) and an Ed.