Rennert International

Rennert International was founded in 1973 by César Rennert, a former faculty member at New York University. Mr. Rennert's mission was to create a high quality language school that offered small classes with a focus on conversational teaching methods.

Rennert started with one classroom, one teacher and one language. Almost four decades later, César Rennert's small enterprise has grown into a hub of international education and communication in New York City and South Beach, Miami.

Rennert's business today encompasses English and foreign language instruction, a translation and interpretation services division, a Teen English program and an English as a Second Language teacher training program.


Rennert International Mission

Rennert International is dedicated to enhancing the lives of its students by providing uniquely enriching language programs in English and foreign languages for academic, professional, cultural and social purposes. By promoting global awareness, workplace values, and professional development of its staff, Rennert fosters an inclusive, supportive environment which encourages students, faculty and staff members to learn from each other. Rennert is committed to providing exceptional customer service through cultural sensitivity and respect for its community of students, faculty, staff members, and educational partners. 


Language Courses

  • Learn English in New York
  • Learn English in Miami
  • American English Courses
  • Business English Courses
  • Summer English for Teenagers
  • Other language Classes also available including Spanish, French, Mandarin, and German classes



Teacher Training Programs

  • TESOL Certificate Courses
  • TESOL/TEFL Practicum
  • Refresher Course for ESL Teachers

Contact / Enquiry

Rennert International Reviews

Great experience of Business English in action

I’ve studied in Rennert International New York for three months this summer. I chose the Business in action program which includes 4 hours of business English class in the morning and then an internship, provided by Rennert International, in the afternoon. During this three months I really emproved my English fluency through conversations, case study, team works and outsides trip, learning a lot also from my classmates from all over the world. The experience of the internship was even better because I could practice a lot and significantly improve my hard skills. For me it was a real great experience of business English in practice!

By: Valentina Leoni
Nationality: Italy
Age: 29

Studying at Rennert was the best experience of my life

Hi! My name is Talita and I’m from Brazil. I studied at Rennert 2 years ago and it was the best of experience in my life. The teachers were very attentive and they used a very effective teaching method that helped me to learn and understand English. I hope to go back to Rennert as soon as possible to study again.

By: Talita
Nationality: Brazilian
Age: 33

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