 The most asked question in a TEFL interview, what is your favorite age range to teach and why? Be specific about which age groups you love to work with, whether they bolster your creativity as a teacher, and why you feel that the age group you are interested in would be fulfilling to teach. You can always express that you're interested in all age groups if you genuinely don't mind who you teach, but be specific about any favorite age groups. If young learners make you happy, because they give you an overall feeling of satisfaction by watching their learning skills develop, then say so.