Ask about mock exam frequency
Schools that run full mocks every 2–4 weeks give you real progress data. Avoid programmes that only do single-skill worksheets without timed full tests.
Writing and Speaking feedback quality
Auto-scored Listening and Reading are easy to find. Ask who marks Writing and Speaking — certified examiners or teachers trained on IELTS rubrics? Vague 'good job' comments don't raise bands.
Class size and speaking time
Speaking improves with practice, not lectures. Prefer groups under 12 where you get regular speaking slots and individual feedback on Part 2 cue cards.
Check their mock platform
Schools using mymockexam.uz give you computer-delivered practice, band history, and results on the same domain you use at home — not disconnected PDF tests.