You have the board ready, the lesson plan open in another tab, and the link already pasted into the class chat. Then the messages arrive. “It says I need permission.” “Someone erased my group’s work.” “The link doesn’t open on my phone.” None of these are whiteboard failures. They are link failures: a few small decisions made in a hurry that cost you ten minutes of teaching time and a good deal of goodwill. The good news is that each one has a short, repeatable fix.
Mistake 1: Pasting the default permission without checking it
Sharing defaults differ from tool to tool, and they can change between the version your school used last year and the one you are using now. The result is one of two failures. In the first, the board opens as view only and half the class sits there unable to type while you insist, from the front of the room, that they definitely can. In the second, the board opens with edit rights for anyone holding the URL, and a student who finished early decorates your carefully prepared diagram.
Both come from the same habit: opening the share dialog and clicking the first active button.
Fix: decide the permission before you open the share dialog
Ask one question first: does this group need to write, or only read?
- Live annotation, brainstorming, group work: edit access for the people in the room.
- Reference material, exemplars, a rubric, a board you will present from: view only.
- Feedback rounds on drafts: comment-only, if your tool offers it. Students can respond without moving anyone else’s work.
- Boards that will be reused with another class: duplicate the board and share the copy, so last week’s notes stay intact.
Set the permission per board, not per account. A single account-wide default will eventually be wrong for one of the two situations above.
Mistake 2: Reading “anyone with the link” as “only my students”
The phrase is literal. A sharing link is a key, and keys get copied. Students forward links to friends, to a study group, to a sibling in another year. The link gets pasted into a folder of shared resources, printed as a QR code, and screenshotted into a group chat that has nothing to do with school. If the board lives at a public URL and someone posts that URL on an open web page, you have effectively published the content.
This matters most when the board contains names, marks, feedback on individual students, or anything a parent would be surprised to see. Treat those boards differently from a map of the water cycle.
A sharing link is not a permission slip. It is a key, and it works for whoever is holding it.
Fix: add a second lock when the content deserves one
- Require sign-in, and restrict access to your school’s domain if the tool supports it. Students on school accounts usually sail through; strangers do not.
- Use a passcode or password on the link when one is available, and give it verbally rather than in the same message as the link.
- Keep the link in one place: your learning platform, class page, or shared document. Not five chats and a whiteboard note.
- If a link escapes, revoke it and issue a new one. Do not wait to see whether anything happens.
Mistake 3: Letting links live forever
An unexpiring link is a small problem that grows quietly. The board you made for a visiting group in September is still open in January, and the new class has found it — complete with the old group’s answers. A link included in a message to parents six weeks ago still opens a working board that anyone can edit.
Most tools let you set an expiry, and most teachers never touch it. If yours does not, revocation is your expiry: delete the sharing link when the session ends. It takes four seconds and closes the door.
Fix: give every link a lifespan
- Single lesson: expire at the end of the day, or the end of the week if students need to revisit it.
- Term-long project: keep it open, but check monthly that it still needs to be.
- Anything with personal data: close it as soon as the feedback conversation is over.
Name your boards plainly, too — “Y9 Rivers – group 2 – Mar” rather than “Untitled board 14”. Future you will not remember which one is safe to reopen.
Mistake 4: Giving everyone edit rights because it is easier
With thirty students on one canvas, edit access for all produces a predictable scene: deleted frames, annotations dragged into the wrong section, one student typing over another, and a chorus of “who did that?”. The board becomes unusable exactly when you need it most.
Editing rights are not a courtesy; they are a design decision. Before the lesson, mark out zones — a named frame or a coloured panel per group — and tell students to stay inside theirs. Where your tool supports it, give edit access only to the group that needs the board and view access to everyone else, then swap at the halfway point. If the task is gathering ideas rather than building something, a shared board with a visible structure and one writer per column solves most of it.
Mistake 5: Testing the link while signed in as yourself
You open the link. It works instantly. Of course it does: you are the owner, on your laptop, on your usual network, already authenticated. That test proves nothing about what thirty students will see.
Fix: open it the way a student would
Use a private or incognito window, signed out, and try the link again. Then try it on a phone. Then try it on a school device if your students use managed machines, because those often sign in with an institutional account and hit a permission wall that your personal session never sees. Watch for three things: does the board load in a couple of seconds, do the drawing tools actually appear, and is the text legible at phone size? A board that needs pinch-zooming to read is a board that half the class will abandon.
Repeat the test with a student account, not a teacher account. In many platforms, teachers keep edit rights inside a board that students can only view — the setting that looks right in your session is not the setting students experience.
Mistake 6: No plan for the board after the lesson
The bell goes, everyone leaves, and the board sits there with edit access and no owner in the room. Two things follow: the link dies quietly and students who want to revise cannot get back in, or the link stays open and next week’s group inherits a mess.
Decide the ending when you create the board. If students need to revisit the work, export it as a PDF or image and share that instead of the live canvas — a snapshot cannot be edited by accident and cannot be unshared by an expiry you forgot about. If it is a template, keep one clean master copy that is never shared with edit rights, and duplicate it each time. Then revoke the link, and rename the board so you can find it again in June.
A two-minute check before you paste that link
- Permission set deliberately: edit, view, or comment, matching the task.
- Link scope checked: anyone-with-the-link, signed-in only, or domain-restricted.
- Expiry set, or a reminder to revoke after the lesson.
- Tested in a private window, on a phone, with a student account.
- Share link stored in one place, not scattered across chats.
- Export or archive plan ready for afterward.
Work through that list twice and it becomes automatic — the sort of habit you stop noticing because nothing goes wrong. Meanwhile, the messages after class go back to being about the work itself, which is the point.
Photo: Ludovic Delot / Pexels