(This can be a tricky question, but if you're lucky enough to be a student in high school or college, you can start off by saying "I'm a [years been there] student at [insert school name]..." You then can go on to say about how after school, you plan to set goals or get/use your degree of your choosing; if you don't know what you are going to do with your life just yet, mention some of your interests that could possibly a rewarding job in the future).