One level at a time. One topic at a time. Every exercise earns its place from your real mistakes.
What Jake noted about you, lesson by lesson — corrections as quiet text, new words, threads to revisit — plus your own saved words. Reviewable anytime.
One certificate per level. You earn it by passing the level exam with a score of 80% or more. Every certificate carries a code that anyone can check on our public registry, so an employer can confirm it is genuine. A Denglish certificate is our own record of your level. It is not a Cambridge or IELTS certificate, and it is not an accredited CEFR exam.