If you are thinking about applying to St Mary’s, we would urge you to come and visit the school. This can be arranged by contacting the Registrar, Mrs Szczerbiak, on 01753 883370 or via email.  You will have a tour of the school and then spend time with the Headmistress, Mrs Ross, who will be happy to talk to you about the education we offer and answer any queries you may have. You might also like to attend one of our Open Mornings .
The next step is to register your daughter and arrange for her to come in for an assessment. The format of this varies according to her age but we always try to make this occasion as enjoyable and ‘stress free’ as we can! You can find full details in our admissions policy by clicking here.

Please click here  to download the registration form.

Please click here to download a registration form for Sixth Form.

Important dates for entrance exams (2019 admissions)

Monday 21 January 2019 Year 7 (11+) Entrance Examination
Tuesday 22 January 2019 Sixth Form Scholarship Examination
Monday 28 January 2019 Year 7 (11+) Music & Sports Scholarship Examination
Tuesday 29 January 2019 Year 7 (11+) Academic Scholarship Examination
Thursday 31 January 2019 Year 3 (7+) Scholarship Examination

For application forms and more information on scholarships and bursaries click here.

We welcome applicants at any stage during the academic year subject to availability of spaces, and successful completion of the admissions process.

A small number of places are available each year in the Sixth Form. At 16+, entry is based on academic ability, GCSE results (a minimum of four B grades is required, to include the subjects to be studied at A Level) and interview.

At other stages and times, the same process will apply, as appropriate to the age of the candidates seeking entry. Parents are welcome to contact the Registrar for more details.

Entry procedure

Girls may enter St Mary’s School at any point from nursery at age 3 upwards.  Entry to Senior House is at 11+ and 16+.  Girls in the Preparatory Department transfer to Senior House at 11+.

In Early Years,  parents are invited to bring their daughter in for a visit during which the Early Years staff will observe the child within the Early Years setting and assess their suitability. A report will be prepared (for the Headmistress) as a result of which an offer will be made if it is felt that the child would thrive and flourish at St Mary’s. A familiarisation session follows acceptance of the offer. Later entry to the Preparatory Department involves an informal assessment day, during which girls are assessed in Numeracy, Literacy and (from 7+) Non-Verbal Reasoning.

The Senior school draws its pupils at 11+ from a wide range of maintained primary and preparatory schools, within a radius of approximately 15 miles.

Entry is selective at 11+ by assessment (English, Mathematics, Verbal/Non-Verbal Reasoning) and interview (usually in small groups) appropriate to the age/year of pupils. For the Sixth Form, entry is based on academic ability and GCSE results (5 A* – C passes with Bs or above in chosen A Level subjects) and interview. At other stages and times the same process will apply, as appropriate to the age of the candidate seeking entry. At each stage of entry (except Early Years) references are required from the candidate’s current school and will be influential in the decision-making process. Ultimately, all pupils will normally be expected to take 8 – 11 GCSEs and 3 – 4 A Levels. The ability profile in the school is wider than that in the surrounding Buckinghamshire grammar schools.

We are an equal opportunities School.


Meet our Head,
Mrs Jean Ross, and discover
her passion for education
and how St Mary’s could
be the perfect school
for your daughter.

Click Here



  • Early Years Taster Session
    5 October 2018 (register to attend)

    Whole School Open Morning
    10am – 12.30pm Saturday 13 October 2018




Mrs Ross the Headmistress assured me that she would help my daughter to become the very best that she could be. With great academic results and a well balanced and happy daughter I believe this has been achieved… Read More

St Mary’s has given our daughter a platform to grow – to be stretched academically & to shine theatrically and musically.  All her needs and ours have been met and we can only applaud St Mary’s staff for their positive attitude… Read More

From the day we first went to look around both my daughter and I have been made to feel incredibly welcome… Read More