Set homework from the NTJ question bank, and see where your class gets stuck the moment they submit.

For Japanese teachers, schools and tutors

Pick from more than 20,000 questions, N5 to N1. Students join with a class code and answer on their phones; everything is graded automatically with explanations in nine languages. Let NTJ handle writing, marking and tallying, so you can spend your time teaching.

Get started · Try the sample class first (no sign-in) ›

Made for teachers like you

• School and university teachers: Run several classes at once, let homework and quizzes grade themselves, and spot weak points any time during the term.
• Language schools and cram schools: Send the same set of questions to different classes, use it online or on paper, and read all the results in one place.
• Tutors and one-to-one teachers: Open one class per student, let NTJ mark the homework, and go straight to the mistakes in your next lesson.

Writing, marking and scoring shouldn't eat your prep time

• Filter the bank by level and topic, pick questions in seconds, and print the sheet with one click
• Automatic grading on submit, with per-question accuracy, common mistakes and each student's weak spots worked out for you
• Explanations in nine languages, so every student can review in a language they understand

Features

Pick from the bank, or write your own

Grammar, sentence patterns, vocabulary, particles, idioms, reading, placement test and course quizzes. Filter by level and topic, draw at random or hand-pick one by one. You can also write custom questions, save favorites and keep templates. Up to 50 questions per assignment.

Class codes and QR Codes

Each class gets an 8-character code, a join link and a QR Code. Close joining, reset the code or transfer the class to another teacher at any time.

Practice, homework and exams

Practice can be retaken; homework can be submitted once; exams can be timed, shuffle questions and options for each student, and keep scores and explanations hidden until the due time.

Results and weak-spot analysis

Accuracy for every question, the most-picked wrong option, each student's score trend and weak topics, who hasn't submitted, and CSV export.

Print question, answer and explanation sheets

A4 layout you can save as PDF. The QR Code in the header takes students straight to the online version. You can also download lesson slides for any course lesson.

Explanations in nine languages

Traditional and Simplified Chinese, English, Korean, Vietnamese, Indonesian, Thai, Spanish and French. The student view follows each student's language.

Student privacy first

You only see the class nickname each student chooses and their answers. Students can leave at any time; you then stop seeing them, and their answers are deleted after 30 days.

Three steps to your first lesson

1. Activate NTJ for Teachers: Choose monthly or yearly. Teachers who received our email can start with a free trial using their promo code.
2. Create a class and share the code: Students sign in, enter the 8-character code or scan the QR Code, and appear on your list.
3. Set work and read the results: Pick questions from the bank for the whole class. As soon as students submit, per-question accuracy and common mistakes appear.

From the classroom to Japan

Students see more than right or wrong. Explanations link back to NTJ's grammar articles, courses and travel Japanese, so what they practice in class becomes Japanese they can actually use in Japan.

Plans and pricing

Both plans include every feature; only the length differs. Joining, answering and reading explanations are free for students.

Choose a plan

FAQ

How can I pay?

Taiwan: credit card or Apple Pay, processed by ECPay; we never see your card number. Outside Taiwan: PayPal or Paddle, charged in US dollars. Teachers who received our email can also start with a promo code trial.

How does the free trial work? Will I be charged when it ends?

Sign in and enter the code from our promo email on the plan page to activate 7 days with every feature of the paid plan. No credit card needed and nothing is charged when it ends. Each code works only once, and each account can try only once.

Do students have to pay?

No. Students join classes, answer and read explanations for free; they only need a site account. Only the teacher's plan is paid. The student answer pages have no ads.

How is student data handled?

You only see the class nickname each student chooses and their answers, never their email, account or other study history. Answers are visible only to that class's teacher and are never used for advertising. When a student leaves or is removed, you no longer see their nickname or answers in that class; the answers are kept for 30 days (rejoining during that time restores them) and then deleted. When creating a class, you confirm that your students are at least 13 and that you have consent from them or their guardians.

What questions are in the bank?

22,866 questions in all: Challenge grammar, sentence patterns, vocabulary, particles, idioms and reading, the placement test bank, grammar article quizzes, and the quiz and extra practice from every lesson of the self-study course. Filter any of them by level and topic. You can also write your own questions.

There are lots of features. Is it hard to get started?

Your first login walks you through three steps (choose your textbook, create a class and get its code, set your first assignment) in about 3 minutes. After that, the home page has just three things: classes, set work and results. Scheduling, templates and custom questions live under “Advanced” at the top right.

Can I set work by my textbook? Does it use the textbook's content?

Yes. We've mapped which grammar points each lesson of 40 popular textbooks teaches (e.g. Minna no Nihongo, GENKI, Marugoto, Irodori); choose your book and lesson and questions come from the NTJ bank for those lessons. We record only the syllabus (grammar points and vocabulary topics), never example sentences, texts or word lists from any textbook. The mapping is currently a draft; report mistakes from the textbook map. Textbook names are trademarks of their publishers; NTJ is not affiliated with any publisher.

Can I schedule a whole term of work at once?

Yes. In a class's “Progress” tab, enter the lesson range, start date and class day: a practice set goes out every week (opening the evening before class, due the next class), with reviews before midterms and finals, which you can rebuild from each student's mistakes. Students only see work once it opens; if a class is cancelled, tap “Push back 1 week”.

Can I quiz only the grammar and words I taught? Can I see the questions before assigning?

Yes. When you create an assignment, tick grammar points or search for words, choose multiple-choice or fill-in and a difficulty, and questions come only from that range. Tap "Preview questions" to see the exact questions (with answers and explanations), tap "Remove" on any you don't want and the system adds a replacement. After you confirm, students get exactly that set.

How do I create review sheets? Can students see each other's?

On the assignment's results page tap "More" then "Create review sheets in one click", choose how many questions per student (5 to 20) and a due time. Every student who made mistakes gets a review sheet only they can see, built from the grammar points and words they got wrong, never repeating the original questions. Students with a perfect score or no submission get none. Best done once everyone has submitted or the deadline has passed.

Can I prepare an assignment now and open it later? Can I send the same one to several classes?

Yes. When you create an assignment, set "Opens" to "At a set time" and students will see it only then; before it opens you can "Open now" or "Change opening time" on the results page. Save assignments you set often as templates, then on the "Templates" page tick several classes, set opening and due times and send them all at once.

Do students need an account? What are the limits of joining without one?

By default an account is required. You can turn on "Let students join without an account" under "More" on the class page, class by class; students then enter the class code and a nickname and can answer. Limits: a student without an account cannot get back to their identity and records after clearing browser data or changing device; you cannot verify who a nickname is, so check in class; records with no activity for 180 days are deleted during data clean-up. Students must be 13 or older or have a guardian's consent.

Are there listening questions? How do students play the audio?

Yes. When you create an assignment, choose "Listening" in the range and tick one or more question types. Students play the audio right on their phone or computer while answering and can replay it; printed sheets carry a QR Code for each clip that plays it when scanned.

Can I export grades as a PDF or to Google Sheets?

Yes. In the class page's "Class overview" tab tap "Grade report (print / PDF)", pick a period (all, this month, last 3 months or a custom term) and you get a class table, optionally one page per student with their most-missed grammar points; tap "Download PDF" to save it from the browser. Tap "Copy for Google Sheets", then paste into cell A1 of Google Sheets or Excel and it becomes a table. CSV export is also available.

Can I switch the teacher screens to Japanese?

Yes. Once you are in the teacher area, the header has a "Display language" switch: tap the Japanese option and the screens turn Japanese (polite desu/masu style); tap the site language to switch back. It only affects your teacher screens; students keep seeing their own language, and where a question explanation has no Japanese version, English is shown.

How do I get listed in the verified teacher directory?

In the teacher area, open "Verified teacher profile card" and fill in your name, institution, region, teaching languages, formats (online, in person, school, private tutoring, small group), contact and a short bio. After you submit, the NTJ team checks it by hand and only approved cards appear in the public directory. Only the fields you filled in are shown, and you can take it down at any time.

Can I get an invoice or receipt?

After payment, ECPay (or PayPal / Paddle) emails a payment confirmation that serves as your receipt. If your school needs other documents for reimbursement, tell us through the Contact page and we'll help.

Do I need to cancel? Can I get a refund?

You pay once and nothing renews automatically, so there's nothing to cancel; the plan simply ends. NTJ for Teachers is a digital service that activates as soon as payment succeeds, so the 7-day cooling-off period doesn't apply after activation. If you paid but your plan wasn't activated, contact us and we'll sort it out.

What happens to my data when my plan expires?

Your classes are locked and become read-only: you can still see every result, but you can't give new assignments and students can't answer. Pay again to unlock right away; nothing is lost. Data is kept for 180 days (6 months) after expiry; if you don't renew in that time, classes, assignments and student answers are deleted.

How many students per class? Does it work for one-to-one tutoring?

Up to 80 students per class and up to 20 active classes per teacher. A class with a single student works fine, and many tutors open one class per student.