Teacher’s basically have their hands tied and cannot explain UNALIENABLE rights and how they come from God, not the government, because the teachers are not allowed to mention God in the classroom. In many cases they risk being fired if they do mention God.
Then the teachers can simply teach that basic rights are INHERENT within the condition of being a human being. All persons have these rights by virtue of birth. They reside within each individual and cannot be restricted or taken away by anyone. We were all Born Free before there were any governments at all, anywhere.
If such can be claimed for animals, then, as animals, ourselves, such can be claimed for humans. No need to invoke Deity and no need to even mention Deity. This totally defangs the atheists. After all, they have rights, too, without believing in God.