Abuse through Neglect in School Textbooks

Paul C. Vitz is a professor of psychology at New York University. He wrote the book "Censorship: Evidence of Bias in Our Children's Textbooks" (Servant Books, 1986), which says on page 1:

"Are public school textbooks biased? Are they censored? The answer to both is yes. And the nature of the bias is clear: Religion, traditional family values, and conservative political and economic positions have been reliably excluded from children's textbooks."