Teachers unions are helping anti-Semitism gain a foothold in K-12 public schools. Efforts to delegitimize the Jewish state are now moving from higher education to K-12 public schools. Attempts to falsely label Israel an “apartheid state” and promote similar forms of defamation are being aided and abetted by teachers unions and normalized by mainstream Jewish groups. Last year, California became the first state to pass a law mandating that public school students must complete an ethnic studies course before receiving a high school diploma. The Liberated Ethnic Studies Curriculum Consortium, which includes teachers unions, advocated on behalf of the new...