Yes, an atheist can become a religious education teacher. In fact, there are many atheists who are passionate about teaching about religion, even though they do not believe in it themselves.

There are a few things to keep in mind if you are an atheist who wants to become a religious education teacher. First, you need to be able to be objective and impartial in your teaching. You should not try to persuade students to believe in your own beliefs, or to disbelieve in the beliefs of others. Instead, you should focus on teaching students about the different religions of the world, and how they have shaped human history and culture.

Second, you need to be able to understand and appreciate the religious beliefs of others. Even if you do not believe in these beliefs yourself, you should be able to see why they are important to others. This will help you to build trust and rapport with your students, and to create a more inclusive learning environment.

Finally, you need to be able to communicate your knowledge of religion in a clear and engaging way. You should be able to explain complex religious concepts in a way that is accessible to students of all ages. You should also be able to use a variety of teaching methods, such as storytelling, discussion, and debate.

If you are an atheist who is passionate about teaching about religion, then there is no reason why you cannot become a religious education teacher. With hard work and dedication, you can be an effective teacher who helps students to learn about the different religions of the world.