To participate fully in this course, you should already have an initial rater course certificate (to show to your approving body). If you are new to this field, we recommend you take our initial rater course: https://www.lenguax.com/product/online-aviation-english-rater-course/
This course is aimed at those who have completed a rater training course and wish to refresh their certificate, according to ICAO guidelines.
The refresher course comprises access to our online rater-training course, providing input on the rating of Pronunciation, Structure, Vocabulary, Fluency, Comprehension and Interactions as well as full audios of candidate performances and rating discussions.
You will also be invited to join three online discussion sessions, to discuss any questions as well as engage in group rating with other raters.
Finally, you will be given chance to rate four more tests, and given feedback in the form of Rasch analysis of your severity / leniency relative to other raters in our network.
The instructors have many years of experience testing aviation English, developing aviation English tests and training raters. We all have Master degrees in Language Testing from Lancaster University, and our SME raters have more than fifty combined years’ experience in the field of aviation.
Read full details about the course here.









Refresh your ICAO rating certificate with our blended learning course, including 9 hours of Trainer-led sessions. This course is suitable for those who have already completed an initial rater training course, and now wish to refresh their certificate after one year.
Elizabeta Kurshudian –
I recently completed the ICAO Rater/Interlocutor Refresher Course with the Lenguax team — Ben, Tyron and Paul — and I am very pleased with the experience. They are exceptionally knowledgeable, highly competent professionals with a great sense of humour who understand the field in depth.
The course was comprehensive and well-structured, covering everything needed to refresh and enrich my skills. I genuinely enjoyed all components, including the reading materials, practical tasks, and group activities.
Well done to the entire Lenguax team, and thank you for an excellent learning experience!
Natalia Grygorieva –
I’ve recently completed the Lenguax Refresher Course on ICAO Documents & Language Testing, and it turned out to be exactly the boost I needed. Special thanks to Ben, who is a great trainer and a wonderfully human one. He manages to combine deep expertise with a strong sense of support, making even complex topics feel approachable. You don’t just learn — you feel guided. The course is concise, well-structured, and engaging. Highly recommended to anyone who wants to refine their rater skills.
Michael Bottrell –
Thanks for another well-run refresher course team. I learned a solid lesson about not doing my exam ratings when tired and straight after the lessons! The retest went much smoother and I am all polished and ready for some more language action.
Rick Willms –
Well done, Ben & Paul! The refresher course was a nice mixture of practice, discussion, teaching, review and testing! Was great to get tuned up and standardized!
Cortac Natalia –
I took the course with Lenguax for the first time, a refresher one. It was an interesting and interacting course, combining online pre-study and virtual classes.
The course materials, clear and easy to follow, helped me to refresh my knowledge. Ben and Paul`s sessions, guiding us what is “reasonable and unreasonable at Lenguax”, made me feel more confident in assessing the candidate, i.e. apply accurately the ICAO Rating Scale. Thanks to Ben and Lenguax team! Highly recommend this course.
Capt Navinder Pall Puri –
It is fantastic course. Very professional and informative. Thoroughly enjoyed the course, it provided you a detailed review of the skills needed to rate ELP effectively. Ben and his team were extremely helpful, and patiently answered our queries the material is exhaustive. The best part of the course for us was the easy-to-use Lenguax Rating guide versus the bit vague ICAO descriptors. This is the fourth year running and every time I gain new incites and improved my skills to rate the candidate. I look forward to applying the skills I’ve gained in my future ratings. The course also served as an eye-opener for me as standardisation is concerned and taught me to think global standardisation rather than just with my organisation and my country. A big thank you to Ben, Tyrone and Paul.
Suresh B N Rao –
I have done my initial course and 3 refresher courses with Lengaux. Their approach to the testing process is highly professional and gives us an opportunity to annually review our standards/ processes and realign (if required), so that we are able to do justice to the testing procedures in keeping with the ICAO standards.
I wish to compliment Ben, Paul and Tyrone for their continued commitment in enhancing the TEAC process.
RAHUL VIJAY KUMAR –
Having been involved in rating and testing candidates, this refresher course always helped me to understand either not to be too lenient or nor too harsh. I really thank Paul and Ben for type of approach in training raters and trying to making sure we are recurrent in the testing standards throughout all formats.
Carlos Vaz –
Having been involved in English Language Proficiency for quite some time, I still needed a valid and reliable Aviation English Rater Course that would allow me to confidently rate people in the highly specialized world of Aviation English.
While attending this course, I was able to notice LENGUAX’s solid analysis of the ICAO requirements. The solid academic background and years of experience of the teachers provided for excellent interactions and great understanding of the rating process.
The course itself is both effective and efficient. It does the right things and it does the things right. It builds solid knowledge and understanding on how to correctly rate candidates in such a high stakes test. The enhanced ability to analyze, synthesize, and draw conclusions, that this course has given me, will allow me to evaluate aviation personnel accurately and consistently.
Michael Bojsen (verified owner) –
A wonderful course where you are gently guided through the world of the English language. Every teacher I have met (online) manages to teach while keeping the atmosphere light and professional.
I can only highly this course to refresh your knowledge on rating.
Chouaib Boubaker –
The online refresher training was well organized. We really enjoyed it. It was very informative and our questions were thoroughly answered. I look forward to applying the skills I’ve gained in my future ratings.
A big thank you to Ben and Tyrone, They were very helpful and patient.
We are very much grateful for the online pre-study explanatory handouts and the audio clips of Paul that explained to us how to rate and check which rating is highly reasonable, reasonable or unreasonable.
Ankur Singh –
After having successfully completed the initial course about a year ago, I recently passed the Refresher Course for Raters.
I thoroughly enjoyed both the courses. The trainers are friendly and approachable. The online content, which can be accessed at any time as per convenience, compliments the virtual classes very well and maximizes the benefit that may be derived from the latter.
The highlight of the course for me was the easy-to-use Lenguax Rating guide as opposed to the slightly vague ICAO descriptors.
The course also served as an eye-opener for me as far as standardisation is concerned (think global standardisation rather than just with the organisation and/or the nation).
Thanks to the entire team of Lenguax for their support and guidance.
William Dunn –
Thoroughly enjoyed the course, which provided a comprehensive review of the skills needed to rate ELP effectively. The instructors are extremely helpful, and the material is well thought out and informative. Highly recommended!
Jonas Buehler (verified owner) –
This course provides a great mixture of online pre-study courses as well as face-to-face classes. Especially the detailed scientific analysis at the end is an impressive tool to display one’s rater performance and proved to be a helpful guide in further developing my rater proficiency.