Learning a foreign language challenges the intellect, enriches the spirit, and allows you to call the Norwegian royal family to tell them they are a ridiculous concept. Help others dial into dialects with this Groupon.

$69 for a 150-Hour Online TESOL-Certification Course ($599 Value, Including Tax)

The 150-hour online TESOL-certification courses are broken down into six modules that overview the characteristics, usage, and development of the English language, classroom dynamics, and the teacher-student relationship. Upon course completion, students receive internationally recognized TESOL, TEFL, and TESL certification, allowing them to teach English as a secondary language in public or private schools.

TESOLS.com

Students of the English language have a lot to contend with. Not only must they learn a grammar system with influences from Latin to Old Norse, but also an ever-expanding vocabulary that includes, according to the second edition of The Oxford English Dictionary, more than 600,000 words. To help students navigate this endless tide of language, TESOLS.com has constructed a standardized online course for those seeking TESOL certification, giving students around the world increased access the learning tool they need most: well-trained English teachers.

TESOLS.com’s courses are divided into six modules, which teach aspiring educators effective ways of presenting the English language’s lexicon, grammatical nuances, and 13 different words for pizza. They also give future teachers an understanding of classroom dynamics and student interaction.

Though TESOLS.com sometimes features a discounted price online, this Groupon still offers the best deal available.