I do not use an interpreter while doing so. A teacher's license and a certificate are the basic qualification. Experience is accumulated by attaining all the qualifications. The ability to work closely with youngsters which includes fluency in their language, particularly ASL, is the most desirable quality in a good teacher. Maintaining a sense of humor in another.
Benefits usually come with the position.
There is always a market for deaf teachers. In other words, deaf teachers are always in demand all over the country, if not the world. There are many paths a teacher can proceed, such as supervisor and higher education. The advantages are the constant challenge of keeping up with the world, thus keeping oneself articulated and knowledgeable. The disadvantage is the inability to work with students year round.