BOSTON -- Two Lexington families are suing the town's school system for teaching students about homosexuality in school.

NewsCenter 5's Jack Harper reported Wednesday that a few dozen protestors were outside federal court as David Parker, his wife and another couple took the school to court. They said teaching young children about homosexuals constitutes indoctrination.

"We want to be the primary directors of our children's upbringing and their education, and at such a young age, at such an impressionable age, we need openness and transparency on what is going on in the classroom," Parker said.

"The parents have rights. We recognize that, but when you choose to send your children to a public school, the school has rights as well, and parents don't have a monopoly on morals," school committee attorney John Davis said.

Some parents said that what is being taught is diversity and tolerance.

"We have families that are headed by gays and lesbians in every school in our community, so this is the reality of the community that we live in, and we want to support all of those families, not just some of them," parent Anne McQuilken said.

"What we really want is parental notification and the option to opt out if we decide if this information over and over again amounts to indoctrination, and it already has," Parker said.