I get this question all the time. “Somebody said that they don’t accept people without teaching experience, is that true?” The long and short of that is no, otherwise I would’ve been rejected from JET. I had some tutoring and an observing education class in university (wherein I went to different schools to watch teachers in their classes), and that’s all I had. Before the JET Program, I had never taught in front of a classroom, so you don’t need to worry about it.
It doesn’t hurt your odds to get in if you’ve got teaching experience, so by all means if you do have it put that on your application and mention it in the interview. Be sure you can answer questions well, like “Why did you want to become a teacher? What kind of teacher do you want to be? How long have you been teaching?” Those kind of routine questions will be asked, and then they may go even harder on you. “What are some challenges you’ve faced in the classroom that you’ve overcome? How many students do you teach on average?” And so on.
Regardless of whether you do or don’t have experience, be sure you can answer the question, “Why do you want to teach in Japan?” My answer was along the lines of, “I want to be a good representative of my country in the classroom so students will have a good impression of foreigners, specifically American foreigners. I want Japan’s international relations to improve, even if it’s only in a small way.” It’s not a bad answer, I think, but there are better answers out there. For example, an art major I knew told her interviewers that she wanted to learn about East Asian art, and bring that experience back to America to influence her art. She hoped to be a part of the art after school programs in her school so she could teach them the Western styles of art and they could teach her the Eastern. It was a better answer in my opinion because it showed she’s future oriented, she’s thinking outside the box, not just the classroom but even after school activities.
Know this answer and memorize it. Practice saying and explaining your view before the big interview. I’ve talked about the JET program before, so be sure to take a look at both the video and the article to learn about what it takes to get in. Also, there’s a very nifty guide from Tofugu about the JET Interview. Read it to get prepared to give the best impression!