Renrakucho: The Daily Contact Book Between Home and School

See what goes into the renrakucho, how Japanese teachers and parents use it every day, and how non-Japanese readers can handle it with translation tools.

Published October 19, 2026 at 11:41 AM JST | By Tokyo Paul

Quick answer: The renrakucho is a small notebook that passes between a child's school and home in Japan. Teachers note tomorrow's schedule, items to bring and messages, and parents sign it, report absences or lateness, and write questions. It is checked daily, and it is often the main written channel between families and teachers.

What the renrakucho is

Renrakucho literally means "contact notebook." It is a small book that a child carries in the school bag every day. At many elementary schools it is handed out in April with other first-week supplies, and in English-language guides for foreign families it appears as the "correspondence notebook." Kindergartens and daycares commonly use similar notebooks, sometimes with printed forms for each day.

The core idea is simple: a short written exchange between teacher and parent, repeated every school day. A municipal guide for foreign residents explains that it is used for daily messages between teachers and parents and that parents check it each day. Because it is so routine, it works like a shared diary of school life, keeping small details from being lost between two busy households.

What it usually contains

At elementary school, the teacher or the child writes down the next day's timetable, homework and things to bring. Children often copy this from the board at the end of the day, which is also a handwriting and organization exercise. Many pages leave space for a parent's signature or personal stamp (inkan or hanko), showing that the notebook was read, and for a short parent comment. Teachers sometimes add a brief reply or a small stamp of their own in return.

At daycare and kindergarten, the notebook often has a daily form. Parents may record the child's sleep, mealtimes, body temperature and mood before drop-off, and teachers write back about the day. Layouts differ by school, so the notebook handed out at the start of the year is the best guide to what each page expects. Some schools also add monthly calendars or notices to the same book.

Reporting absences and lateness

One of its most common uses is telling the school that a child will be absent, late or leaving early. Nishi-Tokyo City's guide for foreign residents says families write a note in the notebook and send it with a sibling or a friend, and that they should call the school if they forget, because teachers worry when an absence is unexplained. Other schools ask for a phone call or an online form, so the rule at the child's own school comes first.

Many schools set a morning deadline for these reports, because teachers need to confirm attendance and safety before class starts. A short entry usually works: the date, the child's name, the reason in a few words (for example fever or a medical appointment), and the parent's signature. Some schools now use online forms or apps instead of paper, so ask which route applies in the first week.

A short guide to useful Japanese

Teachers write in Japanese, usually in hiragana, katakana and the kanji appropriate to the grade, so newcomers can feel stuck. A few words appear again and again: kesseki (absence), chikoku (lateness), sotai (leaving early), mochimono (things to bring), shukudai (homework), ensoku (school outing) and taicho (physical condition). Learning these and a few similar words makes most daily entries readable.

For longer notes, translation tools help. A phone camera can translate handwriting in real time, although neat print translates better than quick cursive, and it can misread names or unusual kanji. A good habit is to use the tool for the gist, then confirm anything that affects safety, health or money with a short question to the teacher, in person or by phone.

Writing back as a parent

Replies do not need to be long or formal. Teachers generally appreciate short, polite notes with the key facts. Many parents write in simple Japanese, copying a phrase from a past entry, while others write in English and add a few Japanese words for the key facts. A short thank-you for the teacher's efforts is a common and warm way to close an entry.

When a topic is complicated, such as a food allergy, a health condition or a family situation, a face-to-face talk or an interpreter-assisted meeting is usually better than a written note. Many schools hold individual consultations for exactly that purpose, and some cities arrange interpreters for them. The notebook is best for small, factual, timely messages, and meetings are best for the larger conversations.

Digital contact books and changes

Schools in Japan have been moving gradually toward digital communication, and some now use apps or online portals for absence reports, notices and messages. Paper renrakucho have not disappeared, though, and many schools use both. Because every school and city makes its own choices, the system a child's school follows may differ from a friend's school a few streets away.

Digital systems can be more convenient for non-Japanese readers, since text can be copied into translation tools and notices arrive on a phone. Parents should still check what the school expects, such as whether a signature or a stamp is still required, and whether urgent matters need a phone call. Ask about login details and notification settings during the first parent meeting.

Tips for overseas parents

Make the notebook part of a daily routine. Setting a fixed time and place, such as the dinner table, keeps it from being forgotten. Many families check it at the same time each evening, sign it, and put it back in the school bag, so that the teacher sees a response the next day. Older siblings or neighbors at the same school can sometimes explain how a particular class uses the notebook. If a stamp is required but the family does not have one, ask whether a signature is acceptable, since schools commonly allow that.

Keep a few template phrases in a phone note for absence, lateness and leaving early. Ask the teacher at the start of the year which topics need a written entry, and whether English is acceptable. Bringing a short list of questions to the first parent meeting makes that conversation easier for everyone. Official multilingual materials also exist: the education ministry offers a guidebook for starting school in seven languages, which can make the general school system easier to understand. For rules that apply to a specific school, always check the school's own documents.

Frequently Asked Questions

Is the renrakucho used at every school in Japan?

It is widely used, especially in elementary schools, kindergartens and daycares, but formats vary and some schools use digital tools instead. Junior high schools may use a student planner for similar purposes. The school's start-of-year handout explains which method applies and what parents are expected to do.

What happens if I forget to sign the notebook?

Practices differ, but a gentle reminder from the teacher is a common result. The signature is a way to confirm that a parent read the message. If the notebook included something important, a short phone call or a note the next day is a sensible fix.

Can I write in English in the renrakucho?

Often yes, particularly for simple messages, but practices differ. Some teachers use translation tools, while others prefer Japanese. Ask the homeroom teacher at the first meeting. Adding the date, the child's name and a few key Japanese words, such as kesseki or chikoku, helps the message be understood quickly.

Want to go deeper? Tokyo Paul's book Japanese Parenting Secrets That Create Calm, Independent Children is available on Amazon.

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