The title is misleading because Mass. requires schools allow parents to be able to opt out of sexual education materials.
Teaching homosexuality is sexually explicit material. The father is well within his rights as a father to require the school OBEY THE LAW.
The principle is wrong. ANY discussion of homosexuality to kindigardners IS EXPLICITY SEXUAL MATERIAL.
It’s applicability is less than certain. As stupid as teaching kindergarteners to tolerate homosexual coupling is, it probably never touches on sex, just the couples. But I don’t know for sure.