Mr Cross was speaking against a drafted school policy that would require staff to use the preferred names and pronouns a child identified with. The policy would also allow transgender children to take part in sports in the group of the gender they identify with.
A fellow school board member said the policy is meant to prevent children from feeling isolated and marginalised for their differences.
Two days later Mr Cross was placed on administrative leave, barred from school grounds, school-sponsored activities and future school board meetings.
Shawn Lacey, principal of Leesburg Elementary, sent an email to inform parents, it read: “I am contacting you to let you know that one of our physical education teachers, Tanner Cross, is on leave beginning this morning.
“In his absence, his duties will be covered by substitute staff already working in our building.”
The lawsuit details Mr Cross’s religious beliefs and explains that he believes God created two genders, male and female, and that his faith “commands him to tell the truth and not lies”.
It goes on to say: “[Mr Cross] does not believe that every student or teacher has to accept his view. But he also believes that teachers should not be compelled to say things that they do not believe to be true.”
The suit asks for Mr Cross’s reinstatement and a temporary restraining order against the school board, interim superintendent Scott Ziegler and interim assistant superintendent Lucia Villa Sebastian.