School profile Verified 18 August 2026

Hertfordshire Private schools

Aldenham School

Elstree, Hertfordshire, WD6 3AJ

Aldenham School is a private secondary-stage school in Elstree, Hertfordshire, with a published age range of 3-19.

Private school Co-ed Ages 3-19 Sixth form Boarding school
Application ?
Apply direct to school
Age range
3-19
ISI ?
Standards met
Boarding ?
Boarding school
Compare Official website Map

At a glance

Key facts

Sector
Private school
Gender
Mixed
Application ?
Apply direct to school
Age range
3-19
Boarding ?
Boarding school
Route check
Independent schools do not use the local-authority grammar-school catchment model; check the school site for boarding, transport and eligibility rules.
ISI ?
Standards met

Overview

Aldenham’s story reaches back to 1597, when Richard Platt established a free grammar school and almshouses. Four centuries later it is a co-educational day and boarding school for pupils from 3 to 18, with a Prep School, Senior School and sixth form on the Elstree site. Girls joined the Sixth Form in 1987 and the 11+ in 2004, milestones in the school’s gradual move to its current model.

Academic life combines the core curriculum with a broad programme of intellectual, cultural, musical and sporting activity. The House system gives pupils a smaller community within the larger age range, while pastoral care and individual progress remain part of the everyday organisation. Moving from nursery and prep through the senior years creates continuity, but the school’s character changes as pupils reach GCSE and sixth-form choices.

Boarding has several levels rather than one fixed arrangement. Day pupils, flexi-boarders and full boarders live within the same house community, with options including two or three nights each week and full boarding from age 13. Houses provide study support and access to the theatre, library, sports hall and gym, while weekends are organised without a Saturday school timetable. That flexibility is one of Aldenham’s clearest practical distinctions.

The main entry points are 11+, 13+ and 16+, with examinations, interviews, references and recent school reports used in different combinations. Sixth-form applicants may be considered through predicted GCSE grades or an online entrance examination. Academic, sport, music, drama, art and design awards sit alongside means-tested bursary support, completing a school shaped by long history, co-education, House life and adaptable boarding.

Key points

Assessment route
Applications are made directly to the school. Check the school's own admissions pages for registration dates, entrance assessment stages, interviews, fees, scholarships and bursaries.
Places and demand
Published Year 7 place numbers and applicant-per-place data are not included in GIAS for this private-school seed profile.
Catchment
Private-school eligibility is not controlled by the local-authority grammar catchment model; check boarding, day-pupil, transport and any sibling or faith rules on the school site.
Results
0% grade 5+ in English and maths and 41.5 Attainment 8
Sixth form
Sixth form available with 10.3% AAB or better.

GCSE benchmark

Latest 2024/25 KS4 measures compared with Hertfordshire and England.

School Local authority England
GCSE benchmark comparison Latest GCSE benchmark measures for Aldenham School, Hertfordshire, and England. 0 50 100 Att. 8 5+ E&M EBacc APS EBacc %
Attainment 8
41.5
Grade 5+ English and maths
0%
EBacc APS
3.66
EBacc entry
0%

Attainment 8 trend

Recent published Attainment 8 scores compared with Hertfordshire and England.

School Local authority England
Attainment 8 trend line Attainment 8 over time for Aldenham School, Hertfordshire, and England. 60 50 40 30 21/22 22/23 23/24 24/25

School details

Sector
Private school
School type
Other independent school
Funding
Independent fee-paying
Application
Apply direct to school
Gender
Mixed
Age range
3-19
Headteacher
Mrs Alex Hems
Pupil roll
849 pupils
Sixth form
Yes
Boarding
Boarding school

Location and contact

Address

Address
Elstree, Hertfordshire
Postcode
WD6 3AJ

School leadership

Headteacher
Mrs Alex Hems

School contact

School phone
01923858122

Admissions contact

Admissions team
Admissions
Admissions email
admissions@aldenham.com
Admissions phone
01923 851618

Admissions

Application route
Apply direct to school
Age range
3-19
Gender
Mixed
Boarding
Boarding school
Day fees
£10,687 per term for Years 7-13 day students
Boarding fees
£11,477-£16,995 per term for flexi and full boarding
Scholarships and bursaries
Scholarships and bursaries
Entrance details
Entrance assessment details are not part of the GIAS open data extract.
Admissions note
GIAS confirms the school type and age range; fees, scholarships, bursaries and entrance assessments should be checked on the school's own website.

GIAS confirms the school type and age range; fees, scholarships, bursaries and entrance assessments should be checked on the school's own website.

Independent schools do not use the local-authority grammar-school catchment model; check the school site for boarding, transport and eligibility rules.

Oversubscription and eligibility

Use the official admissions policy for the current priority order and eligibility rules.

Exam and test format

Entrance route and assessment

Entrance assessment details are not part of the GIAS open data extract.

Assessment route
Apply direct to school
Papers and stages
3 stages
Format
Mixed format

Papers and rounds

  1. Round 1

    English, Maths, Other

    11+ online entrance assessment

    The 11+ online entrance assessment covers English, Mathematics and Reasoning and is taken in Year 6, followed by a leadership-team interview.

  2. Round 2

    English, Maths, Other

    13+ online entrance assessment

    The 13+ online entrance assessment covers English, Mathematics and Reasoning and is taken in Year 7, followed by a leadership-team interview.

  3. Round 3

    Interview

    Sixth Form interview and predicted-grade review

    Sixth Form offers are based on an interview and predicted GCSE grades, with a minimum of 30 points from the top five GCSE grades.

Published assessment components

English, Maths and Interview are listed across the school's published assessment routes.

Published

  • English

  • Maths

  • Interview

    Sixth Form offers are based on an interview and predicted GCSE grades, with a minimum of 30 points from the top five GCSE grades.

Application

  1. 11+ (2027 entry) registration deadline

    12 November 2026

    Registrations, scholarship and bursary applications, and SEN reports are due by Thursday 12 November 2026.

  2. 13+ (2028 entry) registration deadline

    12 November 2026

    Registrations, scholarship and bursary applications, and SEN reports are due by Thursday 12 November 2026.

  3. 11+ (2027 entry) entrance assessment window

    23 November - 4 December 2026

    The entrance assessment takes place during a two-week window at the applicant's current school, with an Aldenham session on Saturday 28 November 2026 if needed.

  4. 11+ (2027 entry) offers

    12 February 2027

    Offers are made on Friday 12 February 2027.

  5. 11+ (2027 entry) acceptance deadline

    3 March 2027

    The acceptance deadline is Wednesday 3 March 2027.

  6. 13+ (2028 entry) offers

    12 February 2027

    Offers are made on Friday 12 February 2027.

  7. 13+ (2028 entry) acceptance deadline

    25 February 2027

    The acceptance deadline is Thursday 25 February 2027.

How to apply

  1. 1

    Register directly with the school

    Complete the school's formal registration before the stated entry deadline.

    Start registration
  2. 2

    Complete the entrance assessment and interview

    The senior entry process uses an online English, Maths and Reasoning assessment, followed by interview and a current-school reference/report.

    Check assessment process
  3. 3

    Accept the offer and pay the deposit

    Successful candidates confirm acceptance in March of Year 7 and pay the deposit to secure the place.

    Read offer terms

Results

Attainment snapshot

Attainment 8 ?
41.5 Attainment 8
GCSE results
0% grade 4+ in English and maths
Grade 5+ English and maths ?
0% grade 5+ in English and maths
EBacc average point score ?
3.66 EBacc APS
A-level results
10.3% AAB or better
A-level average points
33.90 A-level points per entry

Inspection

Standards met

Latest inspection: Not yet verified

Leadership, management and governance
Standards met
Quality of education, training and recreation
Standards met
Physical and mental health and emotional wellbeing
Standards met
Social and economic education and contribution to society
Standards met
Safeguarding
Standards met

Quick summary

  • Latest ISI report: Routine Inspections 2025 is the latest report listed by ISI. The report says the relevant standards were met.

Similar schools and comparisons

Nearby schools families also consider

Local rivals appear first, followed by nearby alternatives where the journey and admissions route are still comparable.

Nearby schools with similar results

Closest comparable alternatives with a similar academic profile, so parents can weigh local fit and results together.

FAQ

Frequently asked questions

How does Aldenham School handle admissions?

Aldenham School handles applications directly. Check the school website for registration dates, entrance assessments, interviews, fees, scholarships and bursaries.

How do I apply to Aldenham School?

1. Register directly with the school: Complete the school's formal registration before the stated entry deadline. 2. Complete the entrance assessment and interview: The senior entry process uses an online English, Maths and Reasoning assessment, followed by interview and a current-school reference/report. 3. Accept the offer and pay the deposit: Successful candidates confirm acceptance in March of Year 7 and pay the deposit to secure the place.

When are the key dates for Aldenham School?

11+ (2027 entry) registration deadline: 12 November 2026. 13+ (2028 entry) registration deadline: 12 November 2026. 11+ (2027 entry) entrance assessment window: 23 November - 4 December 2026. 11+ (2027 entry) offers: 12 February 2027. 11+ (2027 entry) acceptance deadline: 3 March 2027. 13+ (2028 entry) offers: 12 February 2027. 13+ (2028 entry) acceptance deadline: 25 February 2027

What does the latest inspection picture look like for Aldenham School?

Aldenham School is currently rated Standards met.