About CELTA

CELTA stands for “Certificate in English Language Teaching to Adults”. It is the original certificate course in teaching English to speakers of other languages (TESOL) or teaching English as a foreign language (TEFL), and it has been running for four decades. It is highly respected and recognized globally, with 7 out of 10 employers worldwide asking applicants to have it.

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Kelci de Haas

CELTA tutor and Senior Teacher

Hello! This is my story.

Kelci de Haas is a language instructor at Izmir University of Economics, where she works with undergraduate students and is currently leading the transition to flipped learning. With extensive experience in teacher training, she has worked as a CELTA tutor, senior teacher at International House, and course coordinator, teaching and training in Peru, Türkiye, and Romania. She has a strong background in materials development and teacher education, helping educators refine their classroom resources through practical, easy-to-implement strategies.