combat bullying, they brought in gender spectrum, an activist group whose mission is to create more gender sensitive environments for kids. >> true or false, animals have only two genders. >> these fourth graders were told in nature, things aren't always what they seem. some dolphins have both boy and girl parts and clown fish can switch genders. gender spectrum says that diversity applies to people, too. >> people can be girls. feel like girls. they can feel like boys. they can feel like both and they can even feel like if i said, kind of like music. >> critics say these lessons amount to indoctrination by activist groups. >> public schools are here to serve children and educate children on behalf of the parents, not to cross the line and violate the rights of parents and families. >> district officials say the topic of gender expression is part of a larger effort to ensure students feel welcome and safe. >> nobody is trying to influence the students to act in a specific way. we're just saying that if a student does exhibit these