A Bachelor of Arts with an English major is the best option for an English teaching career, achievable in most colleges nationwide, including top colleges like Harvard and Yale.
English bachelor's degrees are also available online. Programs differ. The best option is to check each program and find the one that suits you. Most usual Master of Arts programs with English major are English language, literature and culture, and professional writing.
University of Cambridge's Certificate in English Language Teaching to Adults (CELTA) is suitable for people with little or no teaching experience. CELTA prerequisites are standard of education required for higher education entry, ages 20 and up, and initial knowledge of English language. CELTA has OFQUAL's (the Office of the Qualifications and Examinations Regulation) certificate. There are two types of CELTA courses: full time (which takes four to five weeks) and part time (which takes a few months to more than a year).
Teaching English as a Foreign Language (TEFL) certificate is one of the world's most renowned diplomas. TEFL courses are available worldwide, online, in class and combined. In-class courses are available in New York. Preparations are not obligatory: anyone who thinks he is eligible to take the test may apply. TEFL also offers a specialized course for teaching young learners and business English. Final test is available online or in class.
Another Cambridge program, IELTS, offers English for international opportunities. Note that IELTS is intended for non-English native speakers, and is a prerequisite for further academic degree in English. Foreign students wishing to apply for an English major are encouraged to take the IELTS test. IELTS has two modules: academic and general training. Academic module is for people who wish to study in the United States and general training is for those who wish to live and work in the United States.