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The 11+ Maths Tutor

Stavros Karrettis

With 25 years of experience as a maths teacher, having worked as Head of Maths at leading London prep schools, I believe in making every lesson count.  Specializing in preparing children for the 7+, 11+ and 13+ exams, I have the unique ability to unlock your child's full potential by providing the one-on-one attention they need in order to succeed.

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About Me

Having been Head of Maths at leading London prep schools including Sarum Hall, Arnold House, Falcons Prep and Westminster Cathedral Choir School, my results are a testament that my systems work. As a result of my extensive experience and having trained maths teachers new to the profession, I'm regarded as the very best in the business. I’m a patient, adaptable, reliable and professional maths tutor with the sole purpose of ensuring your child reaches their full potential.


Being a member of the Mathematical Association of GB, for the past 7 years I have been a lead member in writng the official questions for the Primary Maths Challenge (Year 5 and 6) and First Maths Challenge (Years 3 and 4). I take great pride and responsibility in this, especially as they are two of the largest maths competitions aimed towards primary school children across the country.

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Destination Schools

I am immensely proud of the excellent academic results and established record of exam success at both 7+, 11+ and 13+. I have helped hundreds of children to fulfil their potential and go onto attend some of the most prestigious senior schools in the UK.


2024 was another incredible year. I would like to congratulate my very dedicated students who gained offers at the following outstanding schools: 

Channing School

Francis Holland School

Merchant Taylors' School

Highgate School

North London Collegiate School

Haberdasher's Aske' School for Girls

Haberdashers' Boys' School

South Hampstead High School

Henrietta Barnett School

St. Paul's School (Boys)

St. Paul's Girls School

City of London School for Girls

City of London School (Boys)

Godolphin and Latymer School

Dulwich College

Mill Hill School

King's College School, Wimbledon

University College School

Winchester College

Queen Elizabeths' School

Westminster School

Harrow School

Eton College

Prices

I offer one-to-one in-person tuition covering postcodes of Hampstead (NW3 and NW6), St. John's Wood (NW8) and Maida Vale (W9).


My lessons are charged at the rate of £120 per 45 minutes or at the equivalent rate of £160 per 60 minutes. I would advocate that children aged 5 to 7 take a 45 minute session once per week. For those preparing for the 11+ and beyond, I would strongly recommend a 60 minute session once per week (£160). Not only is the content level greater and more demanding but also you would be surprised at just how quickly 45 minutes can fly by! With this, I can assure you that your child is receiving the very best maths education possible. Being regarded as the leading expert in my field, the results and progress my students make are exemplary.


This happens through a unique combination of personalized attention, patience, exam technique, past paper practice, motivation and hard work that allow for my students to excel! I make learning maths enjoyable through engaging and outside-the-box activities (plus a touch of maths-magic and good humour!) designed to build confidence and to ensure your child develops a love for maths!

As well as being fully DBS checked, I am completely familiar with every aspect of 7+, 11+ and 13+  preparation.


Having also been Head of Reasoning (both Verbal and Non-Verbal) at Westminster Cathedral Choir School for numerous years, I am in a very fortunate position to be able to offer preparation in this area for the pre-test examinations of Year 6.

To those further afield, lessons can be conducted remotely via ZOOM at the same rate of £120 per 45 minutes (or equivalent).

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"Thank you for giving our daughter the confidence she needed in preparation for her 11+ exams. She now absolutely loves maths and this is no doubt due to your excellent teaching, subject knowledge and great sense of  humour. Stavros, we have been immensely fortunate to have met you."

Christina

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"We are eternally grateful for preparing our son for his 13+ CE maths exams. To this day, our son speaks of you as being 'the best maths teacher ever'. Thank you for helping him to achieve an A* both in his Calculator and Non-Calculator paper. Without your kindness, patience and experience, we know this would not have been possible."

William

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"We cannot recommend Stavros enough! We have received offers from all the schools we applied for - Wimbledon High, St. Paul's Girls, Godolphin and Latymer, Francis Holland and Putney High. That's 5 out of 5! We are going to accept St. Paul's. Stavros, thank you for making our daughter feel amazing."

Shirin

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"Stavros has been an absolute game-changer in transforming our daughters maths knowledge, self-belief and mind-set on maths. She is always telling us how you make the maths so easy to understand. This is really the first positive thing she has had to say about maths! Her tone and thinking about the subject is so different than ever before. Thank you so much. I'm now so energized and optimistic for the future."

Juliet

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"Dear Mr. Karrettis, we just wanted to let you know that our son has received offers from UCS, St. Paul's, City of London and Highgate. Needless to say, we are over the moon! Thank you for the belief and confidence you instilled in our son and for making the maths so straight-forward! He could not have done this without you." 

Anushka

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"Stavros is not only an excellent tutor but a lovely person too. He explains everything clearly, knows his subject inside out and put plenty of focus on past-paper practice! He was a huge help to our son during his pre-test examinations and is now thriving at his senior school. We highly recommend Stavros, his methods are truly exceptional."

Maria

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Terms and Conditions

Homework Policy

I would like to make it clear that my lessons are planned incredibly carefully to ensure that your child fosters a love of maths and performs confidently in their exams. For this reason I DO NOT do school homework, and nor do I set a homework activity after each session. I would like to reassure you that all consolidation, practice and recap are incorporated into my lessons. The exception to my homework policy is in the final 5 months prior to the 11+ / 13+ exams. This is when I would be expecting your child to be completing a weekly paper supplied by myself. 

Cancellation Policy

It is understandable that every now and then a lesson may need to be cancelled. Unlike other tutors, it is NOT my policy to charge for ANY lessons that do not take place. (The exception to this, is if I arrive at the agreed location and the student is unavailable, then the full payment is still payable).


As a small business and with limited slots available, I would expect that you keep to your weekly allocated (term-time) slot and only cancel as a last resort or illness. When a cancellation is not due to illness, I would expect you to make every effort to reschedule that session before the following weekly session occurs.

If I notice a pattern of repeated cancellations occurring, (or a persistent unwillingness to reschedule cancelled sessions), then unfortunately I would need to offer your slot to somebody else.

During school holidays, I would NOT be expecting you to keep to your allocated slot. Though, provided I am present, and if you would like sessions during the holidays, I can be much more flexible with my timings!

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Stavros Karrettis

If you would like your child to be taught maths from the leading expert and achieve guaranteed success in their 7+, 11+ and 13+, then please get in touch today so that we can begin the journey together.

First lesson, including assessment absolutely free.

07595 263 180

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