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Clayesmore Prep School, near Blandford Forum

Muddy says: Set in idyllic surroundings, Clayesmore Prep is a co-ed day and boarding school with a real family feel and an innovative Saturday activities LEX programme


Clayesmore Prep is a co-educational day and boarding school for 5-13 year olds with a real family feel and set in to-die-for surroundings – no wonder it is so popular. Tucked neatly between Blandford Forum and Shaftesbury, Clayesmore Prep nestles close (but not too close) to its attractive big sister, the Senior and Sixth (read our Muddy review) and its 160 pupils enjoy acres and acres of utterly stunning, bucolic countryside. Oh, and there are a few playing fields there too.

Founded in 1896, the school was originally sited in Middlesex before moving to Pangbourne and then onto Winchester, finally settling down in Iwerne Minster for the summer term of 1933. The Prep School, formerly Charlton Marshall School, joined the Seniors on site in 1974 and brought with it great change, as the following year the school became co-educational.

While the Senior School enjoys the hallowed halls and turreted grandeur of an impressive mansion designed by architect Alfred Waterhouse of Natural History Museum fame, the Prep School by no means feels like an add-on. In the wonderful Thai saying ‘same same but different’, the Prep has its own uniform, own buildings, even its own sports pitches, but also enjoys all of the benefits of being part of an all-through school and is fully integrated within the Senior School spaces. Able to roam free (within reason) these kids get a strong academic prep school education, while the small pupil numbers maintain the feel of a friendly family home. Pupils come from a wide area,from boarders with parents posted overseas, to those who live nearby in Salisbury, Dorchester and Blandford. The school is so popular that minibuses bring in children from as far as Bournemouth and Poole.


In a word, impressive. With no squeeze on space the Prep have their own (pretty massive) playing fields, an adventure playground, manicured gardens, woodlands, copse and Forest School areas. They also use the Senior School’s astro pitches, tennis courts, swimming pool and theatre for mid-term concerts. A big tick goes to the Prep’s very own dance studio, the only purpose-built dance studio I’ve seen at a Prep School. It’s so popular that the big kids dash down here to use it at every opportunity!

Outdoor education is a vital component of the Prep’s ethos, with a brand new outdoor classroom being built by the famous ‘swan shaped’ lake.  The lake bustles with Prep activity on a daily basis; from pond dipping for the younger years to environmental studies and ecology studies for latter years.  Last year, the Prep children won a Gold award from the Woodland Trust for planting 100 new trees. Coming up: an exciting nature trail, and multiple art installations amongst the flora and fauna to excite and engage the youngest Clayesmorians with nature.

Clayesmore Prep have been awarded Top 50 cricketing school status in 2020 and the girls’ game is as important as the boys.  The Prep is big on cross country, hosting one of the largest cross country relay competitions in the country with over 20 Prep and Juniors Schools from across the region joining for the highly regarded event.

Hockey, tennis, netball, athletics and swimming also feature heavily in the timetable, with a tonne of fixtures mid week and weekends (not to mention their renowned after match teas).

Having said that, their sporting philosophy is healthy. Prep sport is not all about finding the next great professional sportsman but about building up positive experience of sport for life and encouraging a love of it that will continue into adulthood. In 2021, the forward thinking sports coaches have partnered with Functional Movement Screening (FMS), an internationally renowned system of movement screening and physical well-being, used often in elite sport. From Sept, every pupil will have a personalised development pathway, to support balance, mobility and postural control. An excellent foundation for whatever pursuits they enjoy in life.

Drama is a biggie here, with the theatre (an impressive 180 seater) hosting two major drama productions a year. There is a Glee Club, Drama and LAMDA on offer too, amongst a myriad of dance disciplines.

The art room is large and bright, the children clearly inspired by their Head of Art, a very successful fabric designer in her own right, and DT is right up there too, also with a new refurb to the suite. The Head of DT is an incredible forward-thinker, getting the kids stuck into laser cutting and 3d printing – constantly looking towards GCSE DT rather than fiddling around with blocks of wood.

For the musically minded, there is a Brass Group, Chamber Choir, Strings Group, Rock Band, Orchestra, Guitar Group, Choir, Dragon Drummers….shall I go on?


Like the Senior School, the Prep is not an exam-passing factory, although there’s a strong success rate for pupils all the way through. There is one form for each of Years 3 and 4 with no more than 18 in each class, and once you hit Years 5 and 6 an extra intake of children allows for 2 forms in each year. In Years 7 and 8 there are three classes per year. The lessons I poked my head into seemed fun and interactive, with a strong focus on forward thinking education and an embrace of mobile technology. Clayesmore very much has the feel of an all-rounder school, with children doing extremely well in all disciplines – this year 21 scholarships were won across Academic, Drama, Music, Art and Sport into senior schools.

With only the occasional pupil leaving at 11 to go to the excellent local grammar schools, nearly 90% of all Clayesmore Prep children go onto the Senior School. While this is by no means pushed, it is a clear indication of how parents feel about the school, and bigger nearby public schools are clearly being shunned in favour of the ethos at Clayesmore.


Jonathon Anderson has been the Head of Prep at Clayesmore since January 2020, after a Deputy Headship at Westbourne House Prep School in Chichester and prior to that, Head of Maths at Exeter Junior School.

Starting at the school at the beginning of the pandemic had a silver lining, he says, allowing him to see a different side to the school and to work closely together with Head Jo Thomson. Keen for pupils to have as many and as varied opportunities as possible and to instill in them a willingness to give their all in every area, the new LEX programme is his baby. Replacing the traditional Saturday school, Year 5-8 pupils can now choose from an exciting menu of trips, experiences and events – some creative, others academic, many outdoors (he’s very big on the outdoors) – on Super Saturdays. He sees parents as primary drivers behind what happens in the school, with lots of opportunities to be involved at every level (some of the LEX activities are open to them too). Under his leadership, there’s been an increasing recognition of the importance of spending time outside, with a bigger forest school and longer morning breaks. No ivory tower Head, he has an open door policy and finds time for some math teaching, sport, outdoor activities and forest school.


See the latest reports from the Independent Schools Inspectorate (ISI), equivalent to Ofsted in the state sector, here.


Unsurprisingly, boarding is hugely popular in this rural idyll, with more fun activities than you can shake a stick at and in 2020 the boarding facilities have been revamped. 50% of children in Years 7 and 8 board, with 25% of children in Years 5 and 6 and a scattering of boarders in Years 3 and 4. Boarding is full or flexi (you have to commit to 2 or 3 regular nights, ad-hoc B&B nights are not an option) and although many boarders go home on Saturday nights there are a strong contingent – at least 30 kids – who stay in to enjoy the whopping selection of weekend activities, including ringo-ing, dry ski slope skiing, sailing and horse riding, and a whole range of activities in school from cookery to gardening to quizzing and art attack nights.

Most boarders are UK based – the school is so popular that they don’t need to seek out overseas boarders – and the fun stuff takes place in a bright, light boarding block. From the outside the mid-70s building isn’t much to look at but the school have worked their magic inside, with funky artwork, colourful sofas and some very impressive bunk bed/desk/sofa combo units being rolled out throughout the dorms giving the boarding house a fun, cosy feel. In the head’s words, there are ‘very few places you can hide away’ at Clayesmore Prep.


We were particularly impressed by the working relationship between Prep and Senior School. Not only are the younger children able to use any and all of the impressive facilities of their older siblings, but there is a strong programme of Senior School pupils helping in the Prep School, whether it is reading with them or BTEC Sports students coaching the Prep sports teams. Whether it is waving to a sibling across the dining room or playing together outside, the school seems happily linked from minis to Sixth Formers.

We love the sound of Year 7 and 8’s Thursday afternoon schedule – they get the run of the Senior School facilities when their older cohorts are out playing matches. Throughout these two years, each pupil gets a whole term of DT, cookery, photography, pottery, print making, textiles and more, enabling them to get a real taste of life in the Senior School and making the transition at the end of Year 8 smooth.


Pupils arrive from 8am until 6pm, with the option to stay for prep and supper until 6.15pm.  The Junior Years 1 & 2) school day finishes at 3.30pm, but LEX activities keep them busy until 5pm. They’re welcome to stay for supper too!


Clayesmore oozes with forward-thinking vision – they clearly intend to (and do) lead the way with dynamic and innovative approaches to teaching, which turns out children with confidence, compassion and ambition. Their new LEX programme exemplifies this.

There are some lovely trips on offer, including a fab Year 8 post-Common Entrance trip to Cornwall, adventure trips for Years 4 and 5, an annual French and History trip to Normandy for Year 7 and loads of jaunts to more local places such as the Jurassic coast, Stonehenge and even the local brewery!

The Prep has an outstanding Teaching and Learning Centre, which encompasses an impressive More Able and Enrichment (GAT to you and me) programme too. A team of specialist teachers work with children both in the classroom and in one-to-one sessions, and the department is based in a suite of bright, colourful rooms bang in the middle of the busiest corridor so there is no stigma felt by children attending. I felt the team here were incredibly impressive – they have clearly recognised the growing number of children experiencing dyslexia, dyscalculia and other issues and are tackling them with gusto and bravery.


Fees start at £2,675 per term for the Pre-Prep, rising to £4,498 per term for Year 3, £4,845 per term for Year 4, and £5,750 per term for Years 5-8. Boarding fees are £8,708 for Years 4-8.


Parents love the strong family feel of the school. ‘Clayesmore is in a different league,’ one parent told me, ‘everything from the school itself and what goes on inside, to the teaching and support staff. The consistent dedication, commitment and one to one interest shown by them all is wonderful.’ I probably don’t need to say anything more, do I?


Good for: Those looking for a co-ed rural school with plenty of activities and roaming room for the kids. Sport and music are both strong here, as are art and DT. A school that will do well by all kids whether they be super bright, sporty, or those who need a tad more attention. The all-through school environment with a strong, warm family feel is exceptional.

Not for:  Parents who want a selective hot-housey approach to schooling.

Dare to disagree?  To find out about visiting the school, email

Want to know more about the Senior School? Check out our Muddy review here.

Clayesmore School, Iwerne Minster, Blandford, Dorset DT11 8LL, tel: 01747 812122,

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