Grammar-Quizzes.com Review: Deep Grammar Reference with Practice

Grammar-Quizzes.com is a free ESL/ELL grammar reference and practice site run by Julie Sevastopoulos, an ESL teacher based in Palo Alto, California. The site has been online since the early 2000s and is licensed for educational use under CC BY-NC-SA 4.0.

The content is organised into major grammatical domains:

• Clauses — clause structure, subordinate clauses, relative clauses, comparative clauses
• Noun phrases — nouns, determiners, pronouns, plurals, articles, modifiers
• Verb phrases — verb basics, tense, modals, perfect tenses, passives, conditionals, complements
• Adverbials — adverbs of manner, time, frequency, stance, and discourse
• Preposition phrases and connectors — coordinators, subordinators, preposition uses
• Practices — writing aids, grammar disputes, punctuation, confusing words, spelling

The reference pages are dense — closer to a textbook chapter than a blog post. Each topic includes contrastive examples (e.g. "much/more…than" vs "rather than"), diagrams, and notes on common ESL errors. The site is text-first: no audio, no video, no animation.

Grammar-Quizzes.com works best for these specific classroom situations:

• Diagnostic placement: the diagnostic quizzes (beginner, intermediate, secondary) give you a rough CEFR estimate in 15–20 minutes without a formal placement test.
• Targeted grammar review: when a student keeps making the same error (e.g. subject-verb agreement), send them the specific reference page and the matching auto-correct quiz.
• Self-study between classes: advanced students can use the contrastive examples to self-teach tricky areas like adverbials, connectors, or reduced clauses.
• Editing practice: the 'How would you edit this?' pop-questions are short, realistic sentences that students revise and check against the answer key.
• Teacher reference: when planning a lesson on modals or conditionals, the reference pages give you the linguistic framework to draw from.

Yes — for the right audience. Grammar-Quizzes.com is one of the most thorough free grammar references on the open web. If your students are B1+ and you want a single place where they can both read the rule and quiz themselves on it, this site delivers.

The trade-off is the interface. The site looks like it did in 2008. Navigation is dense, the colour palette is minimal, and there is no mobile app. Students used to gamified tools may bounce off. But teachers who can sell the value — "this is a free reference you can come back to for years" — tend to get strong uptake.

Honest recommendation: use Grammar-Quizzes.com as a back-pocket reference for yourself and as a recommended resource for advanced students who want depth. Pair it with a more visual platform (All Things Grammar) for younger learners and with a paid lesson library (ESL Brains) for full unit planning.