Ismagulova, A.; Gerfanova, E.; Rakisheva, G. EFL SCHOOLTEACHERS’ LANGUAGE PROFICIENCY AS A KEY FACTOR IN THE LANGUAGE EDUCATIONAL ENVIRONMENT: Received: 29th September 2023; Revised: 30th November 2023, 01st December 2023; Accepted: 04th December 2023. Docens 2024, 6, 72-83.