About MasterGrammar.org

We are an independent publication building the structured English grammar course we spent years failing to find.

Why we started

This site began as a complaint. Every time one of us sat down to actually learn English grammar — not to check a single rule, but to work through the language properly — we ended up with a dozen open tabs and no idea what to study next.

There is no shortage of grammar writing online. What we could never find was an order. Most pages answer one question well and then leave you standing there. They assume you already know the thing they are about to explain, or they explain it again for the fourth time. Nothing tells you where you are, what comes before, or what to do once you understand it.

Eventually we stopped looking and started building. MasterGrammar.org is the site we wanted to be handed on day one.

Our mission

To build a structured English grammar and vocabulary resource that lets learners anywhere study and practise systematically, in the most effective way we can manage.

The word doing the work in that sentence is structured. Every topic we publish has a place: a level it belongs to, topics that come before it, and topics it prepares you for. You can still drop in and read one page about the present perfect. But if you want to start at the beginning and keep going until you are done, that route exists here, and it is signposted.

What we publish

134 grammar topics, arranged across 6 CEFR levels from A1 to C2, with 17538 practice questions attached to them. Every topic comes with exercises, because reading about the past perfect and being able to use it are not the same skill. Level exams sit at the end of each stage so you can find out whether you are ready to move on, rather than guessing.

The numbers above are read straight from our catalogue, so they go up as we publish.

How a lesson gets written

We are deliberate about this, because a grammar site that is confidently wrong is worse than no site at all. Each topic goes through the same route:

Placing it. Before anything is written we decide which CEFR level the topic belongs to and what a learner must already know to follow it. That fixes the vocabulary and the examples we are allowed to use.
Drafting it. Explanations are written against established reference grammars and usage guides rather than from memory, and every rule is shown in a sentence someone would plausibly say out loud.
Reviewing it. A second person reads the draft cold, looking for the failure we care most about: an explanation that is technically correct and still leaves a learner unable to produce the form.
Testing it. Practice questions are written alongside the lesson, not bolted on afterwards, so the exercises test what the page actually taught.
Revisiting it. Published is not finished. Topics that generate repeated confusion or repeated wrong answers get rewritten.

When we get it wrong

We do, sometimes. English is enormous, our team is not, and no editorial process catches everything. If you find a rule stated too broadly, an example no native speaker would really say, a bad translation, or a plain typo, please tell us — corrections are the cheapest quality control we have.

Report an error or ask a question. We read everything that comes in.

How the site pays for itself

Lessons and tests are free to read, and we intend to keep them that way. Hosting and the time that goes into writing are paid for by advertising. Advertisers have no involvement in what we publish: they do not see lessons before release, they do not suggest topics, and no explanation on this site has ever been shaped by one.

Who writes this

We publish under one byline: The MasterGrammar.org Editorial Team. We are a small group of language teachers, learners and developers working as a collective rather than a set of personal brands, and we would rather you judged the lessons than our biographies. What we will tell you is how we work — that is what the section above is for.