Classes and lessons
For parents: join your child's class
5 min read · Updated 2026-11-07
Your child's art teacher uses ChainChum to share the drawings from each lesson. After class, the teacher photographs the drawings, and you see your own child's work, the same day, in a private gallery. Nobody else sees it: not other parents, not visitors, not search engines.
Your child never has an account. You join as yourself, and ChainChum is for adults 18 and older.
Before you start
- The slip your child brought home. It has the class name, a QR code and a code like K7MQ-4XRA7. Booked an online lesson instead? Your code is on your order page: see For parents: join an online lesson.
- An email address (or a Google account) to sign in. If you already use ChainChum, use that account.
Join the class
- Scan the QR code on the slip with your phone's camera. Or open chainchum.app/join and type the code under Type the code from the slip, then press Continue.
- You see Join your child's class, with the class name and the teacher.
- New to ChainChum? Press Create an account to join. Already have one? Press I already have an account. When you have signed in, you come straight back to this screen.
- Tick I'm 18 or older, I agree to the Terms of Service and Privacy Policy, and I agree to see my child's drawings from this class. Tap Terms of Service or Privacy Policy to read them in a new tab.
- Press Join the class.
That's it: you see You joined … and land in your gallery. Drawings the teacher has already photographed appear right away.
Keep the slip at home. Each slip joins one account. Have more than one child in the class? Join with each child's slip, from the same account.
Your private gallery
Open My child's art: tap its tile on the Me page, or go to My child's art. Each class has its own section with the teacher's name and the number of drawings. With more than one child in a class, each child has their own row (Child 1, Child 2).
- Open a drawing: tap it to see it full screen.
- Save: saves that drawing to your phone or computer.
- Delete: removes the drawing for everyone, at once. Tap Delete, then Delete again to confirm. It can't be brought back.
- Download all: downloads every drawing from that class, full size, in one file, with the teacher's notes in
notes.txt.
Notes from the teacher
The teacher may leave a short note under a drawing, marked A note from your teacher, with up to three stamps for what it does well, like Colour or Tried something new. They're praise for the drawing, not a grade. Stamps so far above your child's drawings counts them over the class. Only you and the teacher see them.
The teacher can see the drawings from their own class. ChainChum staff only see a photo if the teacher asks us to check it. A drawing with a name written on it can never be made public.
Send a drawing to the teacher
After an online lesson, or whenever the teacher asks, press Send a drawing under the class and take or pick a photo of the drawing. Photograph only the drawing: no faces, and no names on the front. ChainChum checks it first, then it appears in your gallery and the teacher's class. See For parents: join an online lesson.
When new drawings arrive
On a lesson day you get one notice per class: … new drawings from … (and how many have a note from the teacher), in the bell in ChainChum and, if you turned them on, as a push notification on your phone. We also send one email with the number of drawings and a button. Emails never contain the pictures.
To change these, open Me › Notifications and app:
- untick New drawings from a class under By email to stop the emails (the drawings still appear in your gallery);
- untick Classes under In ChainChum or under push to stop those.
If the teacher adds a note after that, you get A note from your teacher, at most once a day for each class.
See Notifications, emails and the app on your phone. Adding ChainChum to your home screen makes the gallery one tap away.
Leave a class
In your gallery, press Leave class next to the class name, then confirm. You stop seeing the class, and your child's drawings from it are deleted at once. Your slip stops working too: to join again, ask the teacher for a new one. Download anything you want to keep first.
When a class ends
When the teacher archives a class, you get a notice, … is closing, and an email, Download your child's drawings from …. This email always comes, even if you turned class emails off, because it is the only warning before the drawings are deleted. Your gallery shows This class is closing: download the drawings before …. You have 30 days: press Download all to keep them. After that, every drawing from the class is deleted.
If you close your ChainChum account, you leave all your classes and their drawings are deleted.
Troubleshooting
- "That code didn't work." Check the code against your slip (capitals, spaces and the dash don't matter). If you joined before, sign in with the email you joined with. If the class has ended, or the code was already used by someone else, ask the teacher for a new slip.
- "A slip code is 9 letters and numbers." The code was too short or had a typo. Type it again.
- "Too many tries. Try again in an hour." After too many wrong codes, joining pauses for an hour. It clears by itself.
- "You're already in this class." You joined with this slip before. Press Join the class to open your gallery.
- Someone else joined with my slip. Tell the teacher. They can release the code and print you a new slip; the drawings stay with your child's code.
- No drawings yet. The teacher adds them after each lesson. You hear from us as soon as they are ready.
Questions about the class itself, such as times or what to bring, go to the teacher. For anything about ChainChum, write to chainchum@dataexpansed.com.