Those parents are ‘up in arms’ the consequence of their ignorance and unwarranted fear; the consequence of the hatful, bigoted right seeking to vilify and demonize gay and transgender Americans for purely partisan reasons.
Gay and transgender Americans do not pose a ‘threat’ to children; teachers who are gay, children with same-sex parents, and transgender students do not pose a ‘threat’ to children.
Factually addressing the issues of being gay or transgender in schools does not pose a ‘threat’ to children; it is not ‘promoting’ being gay or transgender.
The hateful, bigoted measures supported by Republicans to disadvantage gay and transgender teachers and students are proposed in bad faith, seeking only to discriminate against gay and transgender Americans, having nothing to do with ‘protecting’ children.