ESL Certification: TEFL vs TESL vs TESOL | Career Karma
https://careerkarma.com/blog/esl-certification/
WEBSep 18, 2020 · A TESOL certification is primarily used by ESL teachers who want to teach in a public school or find work teaching English abroad. In the public school system, these ESL teachers teach English Language Learners (ELLs), which are students in grades K-12.
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