According to recent studies, the number of students at US public schools who speak English as a second language is rising. As such, the need for teachers who focus on teaching English as a second language (ESL) is also steadily increasing, putting qualified K-12 teachers of English as a second language in high demand, as the field is a designated shortage area in many regions in the US. During the 2016-2017 school year, for example, 30 states and Washington DC reported statewide shortages of ESL (also commonly known as English to speakers of another language (ESOL), English as a new language (ENL), teaching English to speakers of other languages (TESOL), and teaching English as a second language (TESL)) teachers. Learn more about this topic reading on TeacherCertificationDegrees.