If your child is targeting a grammar school place in September 2027, registration windows are open right now, and missing one means missing the school.
Several schools have already opened their registration portals for the 2026/27 cycle. One has already closed. Most remaining deadlines fall between May and July 2026, which is far closer than it feels. Below is your complete guide: every school, every deadline, every action you need to take.
⏰ A word before we start: All dates below are compiled from official school websites as of April 2026. Always verify directly with each school, as dates are subject to change. Geek School accepts no liability for changes made after publication.
At a Glance: Every Key Grammar School Test Deadline
| School / Consortium | Registration Window | Stage 1 Exam |
|---|---|---|
| Henrietta Barnett School | 🟢 OPEN NOW → 1 Jul 2026 | 2-4 Sep 2026 |
| Newstead Wood School | 1 May → 30 Jun 2026 | 25 or 26 Sep 2026 |
| Sutton Consortium | Early May 2026 (TBC) | 15 Sep 2026 |
| St. Olave’s Grammar | 8 Jun → 29 Jun 2026 (noon) | 18 Sep 2026 |
| Kent Test | Dates published May 2026 | ~Sep 2026 |
| Medway Test | ~Mid-May → ~Mid-Jun 2026 | ~Mid-to-late Sep 2026 |
| Bexley Test | ❌ CLOSED: missed for this cycle (closed 31 Mar 2026) | |
Henrietta Barnett School: Register Today
Girls’ grammar school · Barnet · GL Assessment, two rounds · Entry September 2027
Registration is open right now and closes on 1 July 2026 at 5pm. This is the one school where you can, and should: act immediately.
| Event | Date |
|---|---|
| Registration closes | 1 July 2026 at 5pm |
| Open Day | Tuesday 30 June 2026 |
| First Round Exam (allocated slot) | 2nd, 3rd or 4th September 2026 |
| First Round Results | Late September 2026 |
The exam uses GL Assessment across two rounds. Only children who perform strongly in Round 1 are invited back for Round 2. Exam slots are allocated by the school: you don’t choose your date. Register directly on the school’s admissions page.
Newstead Wood School: Set Your Reminder for 1 May
Girls’ grammar school · Orpington · Own VR + NVR assessment · Entry September 2027
The SIF (Supplementary Information Form) opens on 1 May 2026 and closes at midnight on 30 June 2026. That’s a two-month window, but it will go quickly. Set your reminder now.
| Event | Date |
|---|---|
| SIF opens | 1 May 2026 |
| SIF closes | Midnight, 30 June 2026 |
| Exam (allocated date) | Friday 25 or Saturday 26 September 2026 |
Newstead Wood runs its own VR and NVR assessment. Your daughter’s exam date is allocated by the school: parents do not choose.
Sutton Consortium: Watch the Portal from Early May
Wilson’s School (Boys) · Nonsuch High School for Girls · Wallington County Grammar School · SET + Stage 2 · Entry September 2027
Three of the most oversubscribed grammar schools in South London operate under one umbrella registration. The portal is expected to open in early May 2026. Check the Central Sutton Consortium Registration Portal from early May.
| Event | Date |
|---|---|
| Registration opens | Early May 2026 (TBC) |
| SET: Stage 1 Exam | Tuesday 15 September 2026 |
| Stage 2 Exam: Girls | Saturday 26 September 2026 |
| Stage 2 Exam: Boys (Wilson’s) | Saturday 3 October 2026 |
| Sport & Music Aptitude Tests (Wilson’s only) | Saturday 10 October 2026 |
| CAF (Common Application Form) deadline | 31 October 2026 |
St. Olave’s Grammar School: A Three-Week Window You Cannot Miss
Boys’ grammar school · Orpington · Own two-stage exam · Entry September 2027
St. Olave’s registration window is brutally short. The SIF opens on Monday 8 June at 9am and closes at noon on Monday 29 June. That is exactly three weeks.
| Event | Date |
|---|---|
| SIF opens | Monday 8 June 2026 from 9am |
| SIF closes | Monday 29 June 2026 at noon |
| Stage 1 (SET) Exam | Friday 18 September 2026 |
| Stage 2 Exam (invited candidates only) | Friday 13 November 2026 |
Bexley Test: Unfortunately Closed for This Cycle
❌ Registration closed at midnight on 31 March 2026. Next cycle expected from February 2027. Set a reminder now.
Kent Test: Check the Portal from Early May
2026/27 registration details expected in May 2026. Check the Kent Test Registration page from early May.
Medway Test: Expect Registration from Mid-May
Based on 2025 timings, expect registration to open around mid-May and close around mid-June 2026. Check the Medway Test Registration page from mid-May.
Your Action Plan: What to Do This Week
- ☐ Register for Henrietta Barnett School now: closes 1 July 2026 at 5pm
- ☐ Set a calendar reminder: Newstead Wood SIF opens 1 May 2026
- ☐ Set a calendar reminder: Sutton Consortium portal: check early May 2026
- ☐ Set a calendar reminder: Kent Test and Medway Test portals: check early/mid May 2026
- ☐ Set a calendar reminder: St. Olave’s SIF opens 8 June: closes 29 June at noon
- ☐ Begin preparing your CAF (Common Application Form): deadline 31 October 2026
- ☐ If you missed the Bexley Test: set a reminder for February 2027
All dates compiled from official school websites, April 2026. Always verify directly with each school as dates are subject to change.
Is Your Child Prepared for These Exams?
At Geek School, we specialise in preparing children for the SET, GL Assessment, VR, NVR, and Maths papers used across all the schools in this guide.
Book Your Child’s Free 11+ Assessment at Geek School
If you would like to give your child the best chance of making it in these competitive grammar school exams, please book an assessment – don’t delay!
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