Position of an elementary teacher offers little to none career growth possibilities, and you should count with that, when preparing your interview answer to this question.
One can become an assistant principal in some time, if they are ready to improve their qualification, but I suggest you not to talk about this particular career path in your interview. You should rather say that you love to teach, and therefore you’d prefer to have the same job in five years time. You can be ambitious with your teaching skills, or with goals in your private life (such as starting a family in five years).
Responsible people have goals
Some job applicants say that they do not think about five years, that they do not have any goals in life. But responsible people think about their future, and they have some plans, at least general one.
I suggest you to talk a little about your personal life. Saying that you would love to start a family in five years time is a good answer. Schools, unlike other institutions, do not need to hire people for a long time. They would be happy to have you on board for many years to come, but they would not mind if you left after three years, to start a family. There are always many other job applicants, eager to replace you during your maternity leave…
I love this job and I would be happy to work as an elementary teacher in many years to come. But I hope to improve my teaching skills, and become a really good teacher in five years time.
I see myself as a good role model for many children in my classes. That is my goal, and it would be nice to achieve it in five years time.
I do not have any career plans, but I think about starting a family in four, or in five years time. I would be glad to work as an elementary teacher until then, and come back after my maternity leave. However, we never know what tomorrow will bring. Maybe I will not start a family at the end. But I have no doubts regarding my professional career. I want to teach.