MidYIS and Winchester College late-list entry
How Winchester College now assesses late-list candidates using MidYIS: what the test involves, and how to help your child prepare.
Winchester College's main 13+ admissions route is well known: candidates sit the ISEB Common Pre-Test in Year 6, followed by interview and the school's own entrance assessments. Less widely known is how late-list candidates are now assessed. Late-list applicants, who apply outside the standard Year 6 timeline for occasional places as they arise, now sit MidYIS as part of their assessment.
MidYIS measures aptitude rather than revision, so it cannot be crammed for. What preparation can usefully give a late-list candidate is familiarity: knowing the four sections, the timing, and the style of question before the day.
A different route from the main 13+ process
This is a recent change, and much of the preparation material online still refers only to the ISEB pre-test, because that remains the route most families follow. Families coming to the late-list route can find there is very little information, and almost no familiarisation material, aimed at the test their child will actually sit.
What is MidYIS?
MidYIS (the Middle Years Information System) is an adaptive assessment produced by Cambridge Insight, formerly CEM, part of Cambridge University Press & Assessment. Schools in many countries use it as a baseline measure of aptitude rather than taught knowledge: it is designed to reveal potential, not how much of a syllabus a child has covered. It is taken on screen and adapts in difficulty as the child works through it. It has four sections:
- Vocabulary (10 minutes): word fluency and understanding. Children choose the word or phrase that matches the one they are shown.
- Maths (25 minutes): logical thinking and working with numbers. The content is common to all maths curricula for this age, so children are not advantaged or disadvantaged by which syllabus they have followed.
- Non-verbal (5 minutes): recognising shapes, matching patterns, and spatial reasoning, including visualising 3D shapes.
- Skills (15 minutes): proofreading, and perceptual speed and accuracy: scanning, skimming, and working quickly and accurately under time pressure.
Can you prepare for it?
MidYIS is deliberately designed to be difficult to coach: it measures aptitude, not revision. But there is a real difference between a child who has never seen the format and one who knows what to expect. Familiarity with the four sections, the timing, and the style of question means a child can walk in calm and spend their energy on the test itself rather than on working out what is being asked.
The Skills section in particular, proofreading and speeded accuracy, is unlike anything in most school work, and is worth seeing beforehand.
That familiarity is what OnlinePrep provides: realistic practice in the style of MidYIS, adaptive across difficulty levels and including the Skills section, with free tests to start.
Check the official sources
This guide reflects our current understanding of the late-list assessment process. Winchester College's own admissions pages are the authoritative source, and the school will confirm which assessments your child is asked to sit. If you have more recent information, please let us know.
OnlinePrep is an independent practice resource and is not affiliated with or endorsed by Winchester College, Cambridge Insight, or the publishers of MidYIS.
Useful next steps
- Try MidYIS-style practice
Free tests across all four sections, adaptive from the first question.
- A parent's guide to MidYIS-style practice
How to choose a session, read the tiers, and use answer reviews.
- Winchester College: joining in Year 9 (13+)
The school's official 13+ admissions information, including entry outside the standard year.
- MidYIS from Cambridge Insight
The publisher's description of the assessment.