A report of the Carnegie Foundation recommended the abolition of the undergraduate bachelor of science degree in education leading to the state certification of teachers. Schools of education should become research institutions at the graduate level of the university and not places for the training of schoolteachers. Those planning to enter the profession of teaching should have four years of general, liberal education at the college level, and then three years of practice teaching under supervision... the best teacher is one who learns in the process of teaching.

p. 314 - Reforming Education: The Opening of the American Mind (1990)