Not every slow start needs a formal assessment — but some patterns genuinely do, and knowing the difference saves months of uncertainty. Here's a realistic way to think about timing.
The question that matters more than age
Instead of "is my child behind for their age," ask: "is progress happening with consistent, correctly-paced practice?" A child who's behind but steadily closing the gap with good practice is on a fine trajectory. A child whose specific skill stays flat despite weeks of the right kind of practice is the one worth testing.
A realistic decision path
- First, rule out fixable causes. See our phonics isn't working guide — pacing, consistency, and multisensory input fix most stuck points without testing.
- Check for a pattern, not a single moment. See our signs of dyslexia guide for the specific cluster of signs worth flagging.
- Talk to the teacher. They can compare against a wide peer baseline and coordinate school-based screening.
- Request a referral if concerns persist. A full assessment by an educational psychologist or specialist reading assessor is the only route to an actual diagnosis.
What a full assessment typically involves
Usually a mix of standardised reading and decoding tests, phonological awareness tasks, and sometimes broader cognitive assessment, over one or two sessions with a specialist. It's designed to be low-pressure for the child — closer to guided activities than a formal exam.
Earlier is generally better than later
Support tends to work better the earlier it starts for most reading difficulties. When genuinely in doubt, asking sooner is usually the better default than waiting to see.