A teenager about to post something rarely lacks rules. They have heard "be careful what you put online" so many times it has stopped meaning anything. What they lack is a way to pause in the half-second before they tap share, and a reason to pause that comes from them rather than from a parent watching over their shoulder. The THINK test gives them both, and it is small enough to hand to parents on a single card.

Use one running example so it feels usable. Picture a seventeen-year-old, deciding whether to post a set of photos from a friend's small party. The five letters walk her through the decision herself.

THINK, before you share
TTrue. Do the photos tell the whole story, or do they make a quiet evening look like a bigger night than it was?
HHelpful. Would sharing this actually do something good for anyone, or is it just for attention?
IInspiring. Does it add something worth adding, or is it noise?
NNecessary. Does this need to go up at all, right now, by me?
KKind. Is everyone in the photo happy to be seen here? Would I be glad if someone posted this of me?
THINK sits between a ready post and the share button A flow from left to right. A post ready to share passes through a gate made of five chips, T, H, I, N and K, before reaching a share button that stays paused until the check is done. YOUR POST THINK a five-second check T H I N K Share only once it passes
The teenager runs the five letters themselves. The post waits at the gate; nothing is shared until they have decided it should be.

The power of the test is that it does not produce a yes or a no from a parent. It produces a decision from the teenager. By the time she reaches the K, she is the one weighing whether her friend in the corner of the shot would mind, and that is a judgement she now owns. A rule told her not to post embarrassing things; the test taught her to notice when something is embarrassing and decide for herself. Those are not the same skill, and only the second one travels with her when no parent is in the room.

A rule decides for a teenager once. A habit of pausing decides for them every time, including the times nobody is watching.

Why this beats the alternative

The instinct, when a parent is worried about what their child shares, is to tighten control. The trouble is that strict limits tend to produce the opposite of what they intend. There is a pattern worth describing to parents: the more a parent polices a teenager's posting, the more the teenager learns to do it out of sight. Secrecy, not safety, is what tight control usually buys. A teenager who feels watched does not stop sharing; they stop sharing where you can see.

Curiosity does better than control here. A parent who asks, with real interest, what their child likes about a platform, or why a particular post matters to them, opens a conversation that a rule closes. The shift from "you are not allowed" to "tell me about this" is the same shift the THINK test makes: it treats the teenager as someone building judgement, not someone to be managed. The test is simply that curiosity packaged into something a teenager can carry on their own.

How to give it to parents

This one is built for sharing, so keep it that way. Five letters fit on a card for the fridge, a slide at a parents' evening, a line in a newsletter. The framing to send with it matters as much as the test: the parent introduces it once, then steps back. They are not the examiner who checks each post against the five letters. They hand over a tool and let their child run it. A teenager who has run THINK a few times stops needing to be reminded, which is the entire point.

Andy Perryer is the head of digital learning at a group of international schools and the creator of PICRAT Suite. THINK is a widely used acronym for online sharing; the wording here follows the common version (True, Helpful, Inspiring, Necessary, Kind).