Aviation English training and ICAO English exam can become a part of skill tests that you provide.
If you are a flight examiner administering flight exams, Aero Language gives you an opportunity to extend your examiner ratings. Afterwards, you can provide the ICAO English Exams as a part of license, revalidation, and renewal flight exams. Also, you can provide the ICAO English Exams as a part of operator proficiency check - OPC on a flight simulator.
Many pilots will surely appreciate this service as they can effectively save time by hitting two birds with one stone.