An English as a second language (ESL) tutor works with children and adult students whose native language is not English. As an ESL tutor, your duties revolve around teaching students the English language through reading, writing, speaking, and listening activities tailored to their skill levels. As your students improve, you increase the difficulty level of your tutoring sessions. You can find work as an ESL tutor through tutoring centers and language schools both in the U.S. and abroad. You can also work as a freelance ESL tutor and market your services to private tutoring clients.