John Taylor Gatto (born December 15, 1935) is an American author and former school teacher who taught in the classroom for nearly 30 years. He devoted much of his energy to his teaching career, then, following his resignation, authored several books on modern education, criticizing its ideology, history, and consequences. He is best known for the underground classic Dumbing Us Down: the Hidden Curriculum of Compulsory Schooling, and The Underground History of American Education: A Schoolteachers Intimate Investigation Into the Problem of Modern Schooling, which is sometimes considered to be his magnum opus.