Formal English, prestigious academia, and certified.

I was not born in America so I have been learning American English ever since 6yo. My English improved much more formally after obtaining a master's degree in New York. In case you're wondering about my credentials, I am certified (tefl/tesol) to teach English. I have many experiences of teaching so I know the difficulty at times. I can tell you more about me if you are wondering, please feel free to ask. Could you please tell me a little more about yourself? What goals do you hope to see in yourself from this teaching experience?