Search "online English school" and you'll drown in options within seconds — flashy apps, marketplaces with thousands of tutors, big-name brands, tiny independent schools. They all promise fluency, and they all look convincing on the homepage. The hard part isn't finding a course; it's working out which one will actually move your English, and which will quietly take your money while you stall. The good news is that the things that matter are surprisingly easy to check once you know what to look for. Here's how to choose well.
Who Is Actually Teaching You?
This is the single biggest factor, and it's the one schools are vaguest about. A polished platform means nothing if the person on the screen can't teach. Look past "native speakers" as a slogan and ask the real questions: are the teachers qualified (CELTA, DELTA, a teaching degree), and do they actually teach for this school or are they freelancers who churn through students? Consistency matters too. Learning with the same teacher week after week means they remember your weak spots and build on them, instead of you re-introducing yourself every lesson. If a school can't tell you who'll teach you or how their teachers are trained, that's your answer.
How Many People Are in the Room?
Class size decides how much speaking time you actually get, and speaking time is where progress lives. In a class of twenty, you might say three sentences in an hour. In a group of six, you can't hide — and that's exactly what you want. Find out the maximum class size, not the average, because the maximum is what you'll often get. Small groups also give you something one-to-one can't: other learners to react to, disagree with, and practise real conversation against. If a school won't cap its class sizes, your speaking time is the first thing that gets squeezed.
Is There a Real Curriculum, or Just Lessons?
There's a big difference between a school and a stream of disconnected lessons. A good programme knows where you're starting (a proper level test, not a quick quiz), where you're heading, and how each week builds toward it. Ask whether they assess your level before you start, whether lessons follow a structured path, and how they track your progress over time. "We'll chat about whatever you like" sounds friendly, but after three months of pleasant chats most learners are exactly where they began. Structure is what turns effort into results.
Does the Schedule Fit Your Real Life?
The best course in the world is useless if you can't attend it. Check the timetable against your actual week and time zone — live classes you can realistically join beat recordings you'll never watch. Look at how flexible they are when life gets in the way: can you switch a class, catch up on a missed session, or pause if you travel? A school built for working adults expects this. One that punishes you for missing a Tuesday isn't designed for a real, busy human.
Look Past the Price Tag
Cheap-per-hour can be the most expensive option if the lessons don't work, and the priciest brand isn't automatically the best. Work out the real value: qualified teachers, small groups, a proper curriculum, and support between lessons are worth far more than a low headline rate with forty students in a room. Read reviews that mention actual progress rather than just "nice teacher," and treat any school that pressures you into a huge upfront payment with caution. A confident school lets you try a class first.
Choosing well comes down to a handful of honest questions: who teaches, how small the groups are, whether there's a real plan, and whether it fits your life. If you'd like to see what that looks like in practice — qualified UK teachers, small live classes, and a clear path from your current level to your goal — take a look at our online courses at Kensington English and book a class before you commit to anything.
