St John's Preparatory and Senior School

Res Ipsa Loquitur (The Thing Speaks for Itself), runs St John's motto, and the results tend to do exactly that. This is a small, selective, co-educational independent school on The Ridgeway, spanning early years at age 3 through to sixth form at 19, with its prep school in Potters Bar, Hertfordshire and its senior school just over the border in Enfield. Around 497 pupils and students fill the whole institution across nursery, prep and senior phases, kept deliberately compact so that classes stay small and known. Principal Calliope Tardios owns and leads both schools, with Mr A. Tardios heading the senior school day to day. A Christian ethos runs through pastoral life without making this a denominational faith school. The stated aims run to academic excellence, social competence and environmental awareness. In April 2026, ISI inspectors judged that all relevant standards are met.

St John's is a family-run school in the most literal sense: it is owned and directed by the Tardios family, and that continuity shapes its temperament. Decisions are made quickly, relationships are long, and the school knows its families personally. With fewer than 500 on roll across every year group from age 3 to 19, no child is anonymous here, and the culture leans towards close supervision and high expectation rather than the sprawl of a larger independent. The school frames its values around a moral framework rooted in Christian principles, an enquiring mind and a lifelong love of learning, and it joined the Independent Schools Association in 2022 after a long history under the Ofsted framework.

The tone is calm and purposeful. The atmosphere is nurturing and supportive, with positive relationships between staff and pupils creating an orderly setting, and that reads accurately in the way the school talks about itself: independence and resilience are treated as outcomes to be built, not assumed. An advisory board provides external scrutiny and challenge to leaders, which is a useful check in a proprietor-led school. Pupils take on responsibility early, through a School Council for Years 3 to 6 and a House Captains and Monitors system in Year 6, and by the senior phase the opportunities to lead are extensive, extending to a stated emphasis on understanding democracy and the rule of law.

The site itself splits across two locations on The Ridgeway. The prep school sits in Potters Bar; the senior school occupies North Lodge a short distance away in Enfield. Early years pupils learn in bright, purpose-designed rooms, including a Reception classroom with a large covered balcony for outdoor learning in all weathers and a Forest School in the grounds where the youngest children build dens and track animal prints in the snow. The EYFS rooms include a Maths Playroom stocked with mathematical games that doubles as a quiet space for small-group teaching, and two dedicated playgrounds reserved for the youngest children to develop gross motor skills. Prep pupils earn responsibility through the same channels, from tending the Forest School to running charity fundraising. It is a school that wears its ambition plainly and expects the work, in the words of its motto, to speak for itself.

St John's is an academically selective school, and the exam data confirms the effect. At GCSE, the senior school ranks 295th of 3,895 schools in England for results, placing it in the top 7.6% (ranked against all schools in England with published GCSE results, state and independent). That is well above the England average. On the proprietary FindMySchool overall measure, which blends results with an inspection-based score, it sits 294th of 3,887, and locally it is the 2nd-ranked school in the Potters Bar area. Nearly half of GCSE entries, 45%, are awarded at grade 9 or 8, and just over two thirds, 67%, reach grade 7 or above, the equivalent of the old A*-A band. For a non-super-selective independent of this size, that spread of top grades is the clearest evidence that the selective intake is being taught well, not simply admitted well.

The sixth form carries the same signature. For A-level results, St John's ranks 378th of 2,562 schools in England, in the top 14.8% and above the England average, with an overall FindMySchool position of 400th of 2,561 and a 2nd-place local standing. Almost 40% of A-level entries are graded A* or A, well ahead of the England figure of around 24%, and more than two thirds, 68%, land at grade B or higher, against an England average close to 47%. Set against fees that sit below many London independents, that A-level standing is the core of the school's pitch to results-focused, cost-conscious families, and it is reflected in a run of strong showings in the published A-level league tables.

For a school of this size, that consistency matters more than any single headline. Small cohorts can swing results year to year, yet St John's keeps landing in the upper reaches of the England tables at both key stages, and it has topped its own borough league table in 19 of the past 23 years. The proprietary FindMySchool rankings above are built from official results data; parents comparing local options can view St John's alongside neighbouring schools side by side through the FindMySchool hub tool.

Teaching is confident and subject-led. Teachers have high levels of subject knowledge, pupils are motivated and develop as independent learners, and assessment information is used to monitor progress and target support. The curriculum is balanced and academically stretching across all phases, and the school leans hard into subject enrichment rather than teaching narrowly to the exam. Leaders promote high academic standards while treating personal development as part of the same job.

That enrichment is unusually concrete. In science, pupils work towards British Science Association CREST Awards at Key Stage 3, attend GCSE Science Live and, in the sixth form, New Scientist Live and the Biology, Chemistry and Physics Live lectures. Mathematicians progress through the UKMT Junior, Intermediate and Senior Challenges towards the Kangaroo and Mathematical Olympiad rounds, while university-bound students prepare for Cambridge admissions assessments such as STEP. Computing pupils tackle the Bebras Computational Thinking Challenge, Oxford Computing challenges and the Cyber Discovery programme, and the youngest engineers build through Lego Robotics workshops.

In the early years, learning is play-led and outdoor as much as indoor, with the Forest School and Maths Playroom used to make abstract ideas physical and the covered Reception balcony keeping outdoor sessions running whatever the weather. A First Access Programme puts a musical instrument in every young pupil's hands early, so that music is treated as part of the core curriculum rather than an extra. English is an additional language for a sizeable minority of pupils, supported through intervention strategies alongside their classroom teachers, and a small number of pupils identified with special educational needs receive additional specialist help. The picture is not flawless, and the school does not pretend otherwise: in some lessons, teaching is not always well enough matched to pupils' prior attainment, so progress there dips below the school's usual standard. It is a targeted point about consistency rather than a broad concern, but it is the honest limit of an otherwise strong teaching culture.

Sixth-form destinations are the school's proudest statistic: St John's reports that 95% of its A-level leavers go on to Russell Group universities. Named destinations in recent years include Oxford and Cambridge, Imperial College London, UCL, King's College London, Durham, Warwick, Manchester, Exeter and Loughborough, with individual leavers holding multiple Russell Group offers across science, engineering and the humanities. In the most recent cycle recorded, five students applied to Cambridge and one secured a place, a strong return from a sixth form of this scale.

Support for those applications is structured rather than left to chance. Students use the Unifrog and MyFutureChoice platforms for course research and careers guidance, and the sixth form is led by a dedicated Head of Sixth Form who oversees references, interview practice and the competitive medicine, science and engineering routes. Nineteen A-level subjects are on offer, including less common choices such as Greek, Chinese, Persian, Turkish and Further Mathematics, which gives able linguists and scientists real room to specialise before applying for demanding courses.

Progression within the school is a genuine pathway too. Pupils move up from the prep school into the senior school and on into the sixth form, and the international sixth form draws additional students from overseas, so Year 12 is a blend of long-standing St John's pupils and new joiners arriving specifically for A-levels. Earlier exit points matter less here than at many schools, because the all-through structure is designed to carry a child from Reception to university application under one roof. Younger leavers are rare, and most families who choose the prep school expect their child to move through to the sixth form. That continuity is one of the school's practical selling points: the destination data at 18 is, in effect, the culmination of a fourteen-year education rather than a two-year sprint.

St John's is selective, and entry is by assessment at every main stage. The principal entry points are the early years at age 3, various points through the prep school, Year 7 into the senior school, and the sixth form at 16. Prep-school admission is handled personally: families take a tour and meet the principal, with an in-year assessment where a child is joining an established class.

Senior entry is more formal. Applicants sit an entrance examination in October, and qualified candidates are then invited to interview with the head. Sixth-form places depend on GCSE performance in line with intended A-level subjects, and the school recruits externally at 16 as well as promoting its own Year 11 cohort. Because St John's runs a homestay boarding arrangement for international sixth formers, placing students with experienced host families, overseas applicants sit alongside local day students in the same admissions round.

The school does not run large open mornings. Instead it offers individual tours by appointment, which suits a small school that prizes knowing each family before offering a place. Registration costs £180 for the prep school; the senior school charges a £180 registration fee plus a £600 acceptance deposit, both non-refundable. There is no published catchment or distance rule, as is normal for an independent: proximity offers no priority, so families across Potters Bar, Enfield, Barnet and the wider M25 corridor apply on equal terms. The international dimension is a genuine part of the intake: alongside a sizeable group of pupils for whom English is an additional language, the sixth form recruits students from overseas, chiefly from Singapore and China, who join through the homestay route. To gauge a realistic commute, the FindMySchool map search lets you check journey times from home to both sites before you register.

Pastoral care is where a small family school earns its keep, and St John's has invested in it visibly. It holds Nurture UK's National Nurturing Schools Award, and its wellbeing provision includes professional counselling, trained mental health first aiders on staff and participation in Children's Mental Health Week. Circle time anchors pastoral work in the prep school, while group tutorials do the same in the senior school, all supported by a structured PSHE programme.

Pupils' physical and mental health and emotional wellbeing are well supported across the phases, and the school extends its reach to parents too, partnering with Tooled Up Education, the platform led by psychologist Dr Kathy Weston, to give families evidence-based webinars, podcasts and practical strategies on wellbeing and learning at home. Inspectors judged safeguarding to be effective, prioritised through strong leadership and careful oversight.

Peer mentoring rounds out the model, with older students supporting younger ones, which fits a school where the age range from 3 to 19 sits on adjacent sites and relationships carry across the phases. The result is a close, watchful pastoral culture rather than an anonymous one, and it is a large part of why the school talks about resilience and independence as everyday expectations rather than slogans. For international sixth formers living with host families through the homestay scheme, that same pastoral network provides the day-to-day support that on-site boarding houses would otherwise offer.

For a compact school, St John's punches hard in sport, and football is its standout. The school has been National Champions in football eight times, with recent national cup wins for its U11 and U14 sides and regional cup success in netball, and it maintains academy connections with Arsenal and Watford. Fixtures and training run out of the St John's Sports Hall and an outdoor basketball court, and the wider programme spans cricket, tennis, hockey, swimming, basketball, athletics, cross-country, fencing and rounders. International tours in football, hockey and netball give the strongest players a stage beyond the local circuit.

Music is the second pillar, and it starts young. Through a First Access Programme, prep pupils are introduced to violin, viola, recorder, drums, guitar and wind instruments, and purpose-built practice rooms let them rehearse during the school day. Ensembles include a school orchestra that performs weekly in assembly and at local church events, plus dedicated recorder, violin and viola groups and a Music Theory club. The choral side is genuinely decorated: the A Cappella group and Junior Choir are current winners of the ISA A Cappella competition.

Drama and the arts run alongside. Pupils sit LAMDA acting examinations as part of enrichment, an Acting club stretches elite Year 5 and 6 performers towards LAMDA qualifications, and annual productions are staged at a local repertory theatre rather than a school hall. In the visual arts, senior pupils work in the school's art studios, contribute to an Art Department Magazine, exhibit at an annual Art Exhibition and enter external competitions, with gallery and exhibition visits built into the course.

Languages and horizons are a further strength, fitting for a school with an international sixth form. Alongside lunchtime language clubs, French and German poetry competitions and an annual Eisteddfod poetry event, students take exchange trips and tours to Paris, Madrid, Berlin, Belgium and New York, and a pen-friend programme links them with a partner school in Paris. Add the Duke of Edinburgh's Award, charity fundraising and a student-run tuck shop attached to business studies, complete with guest speakers and a visit to Cadbury World, and the co-curricular offer is broad and, crucially, backed by real named achievement rather than a generic list. The small roll works in a child's favour here: with fewer than 500 pupils competing for places, a keen musician or footballer is far more likely to make the orchestra, the choir or a national squad than they would be at a large school, and the same names recur across sport, music and drama because the school actively expects all-round participation.

Fees are charged per term and, for the taught school years, attract VAT at 20%. Senior school fees (Years 7 to 13) are £5,800 per term plus VAT for 2025/26, rising to £5,850 per term for 2026/27. The junior phases run lower, at around £4,500 per term for Reception to Year 2 and £4,750 per term for Years 3 to 6, each plus VAT. For nursery and pre-prep fees, families should check the school's own fee page, as early-years costs and any funded-hours eligibility are set separately.

On the school's own account, St John's positions itself as comparatively affordable for a results-driven independent, and it makes a point of its value relative to fees at larger London schools. Sibling discounts ease the cost of educating several children together: 5% off the second child, 10% off the third and 15% off the fourth. The school also states that it offers scholarship opportunities and financial aid to widen access, though it does not publish specific award values or income thresholds, so interested families should ask the admissions office directly. Bursaries in the strict, means-tested sense are not detailed publicly, so families should be clear whether they are asking about a merit scholarship or income-based help. As with any independent, treat any annual figure estimated from termly fees as indicative and confirm the current schedule with the school.

St John's operates as a standard independent day school across two nearby sites on The Ridgeway, with the prep school in Potters Bar and the senior school in Enfield. Early years provision begins at age 3, and families should confirm nursery hours, wraparound arrangements and any government-funded entitlement directly with the school, as these are set at the early-years level. There is no dedicated school coach network published; the area is served by rail and sits close to the M25, and most families travel by car or public transport. For sixth-form boarders from overseas, accommodation is arranged through the school's homestay host-family scheme rather than on-site boarding houses. To help plan travel, the FindMySchool map search can compare journey times from home to each of the two sites.

Two sites, one school. The prep and senior schools occupy separate premises on The Ridgeway, in Potters Bar and Enfield respectively. For families with children in both phases, it is worth checking the daily logistics of two drop-offs before committing.

Teaching consistency. Teaching is strong overall, but in some lessons work is not always well matched to pupils' prior attainment, so progress in those lessons can dip below the school's usual standard. Ask how the school is tightening differentiation across departments.

Small cohorts, variable subject viability. With fewer than 500 pupils across all ages, sixth-form group sizes are small. That means excellent attention, but check that the specific A-level combination your child wants will run in a given year.

Financial aid is not fully published. The school offers scholarships and financial support but does not publish award values or eligibility thresholds. Families relying on assistance should raise it early in the admissions conversation.

St John's is a small, selective, family-owned independent that consistently delivers results well above the England average: top 7.6% at GCSE and top 14.8% at A-level, with 95% of leavers heading to Russell Group universities and a track record of Cambridge and Imperial offers. Its strengths are a close pastoral culture, genuinely decorated sport and music, and a personal, known-by-name atmosphere that a larger school cannot easily match. It suits ambitious, motivated children who will thrive on high expectations in a compact setting, and families who value close supervision and strong destinations over the scale and breadth of a big-name independent. The main caveats are the split-site arrangement and the small cohorts that can affect which sixth-form subjects run, so parents should confirm the practical details for their child before applying.