Independent IB Schools (Small Cohort)

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Our League Tables show the highest performing independent schools in the UK based on the percentage of top grades awarded to students in 2021.

This year, students did not sit public examinations and grades were awarded by schools according to strictly controlled internal assessment criteria. Simply put, the grades were awarded by teachers. The latest grades based on actual examination results were awarded in 2019, of which we hold almost complete records which are available exclusively to our clients.

Whilst we are confident that the grades awarded in 2021 are a reflection of student achievement it is important to note that, in the case of a number of schools, the percentage of top grades varies considerably from the results obtained in previous years.

For further information and advice on applying to a UK private school please contact us by calling +44 1622 813870 or complete an Enquiry Form.

2021 Results

# Avg. Points Name Day/Board Boy/Girl Day £ Board £ Cohort Size
1 43.2 North London Collegiate School Day Girls 21,147   13
2 40.0 Bristol Grammar School Day Co-ed 15,477   18
= 40.0 Royal High School Both Girls 14,595 32,286 19
4 38.5 Kent College Canterbury Both Co-ed 19,995 37,017 14
5 37.8 Stonyhurst College Both Co-ed 21,750 39,300 17
6 37.0 CATS College Canterbury Both Co-ed 22,995 43,980 12
= 37.0 The German School Day Co-ed     17
8 36.0 Worth School Both Co-ed 25,080 36,480 19
9 35.8 Lycee International de Londres Winston Churchill Day Co-ed 20,540   10
10 35.5 Leighton Park School Both Co-ed 24,660 40,455 18
11 35.0 Warminster School Both Co-ed 17,220 35,310 10
12 34.0 Box Hill School Both Co-ed 20,820 37,545 19
13 32.0 Buckswood School Both Co-ed 14,850 30,900 13

Please click on a school name for more information

This table lists the Top Small Cohort IB Schools in the UK for 2019. These positions are compiled from the average points achieved by sixth formers taking the Diploma Programme of the IB. Note that the IB is still a relatively new qualification for UK schools and many have not been offering it sufficiently long to have results to publish. The International Baccalaureate Organisation refuses to publish results and we have had to collect these statistics by asking each school individually. We show two league tables - this small cohort table is for schools with IB DP cohorts of 19 or less and more than 10. If a school has fewer than 10 pupils doing the IBDP their scores are not statistically credible and additionally we would not recommend them because their numbers are too small to offer a good range of IB subjects. A small cohort school will inevitably be offering other curriculums such as A Levels. Speak to us on 01622 813870 for advice.

Click on the name of a school for more details. The table can be reordered by Name, Ranking, Day or Boarding Fees etc by clicking on the arrows at the top of each column.


  1. We make every effort to obtain results for every independent school, but there are sometimes a few gaps in our data, because the information is not freely available or because a school will not supply it. In most cases this applies to schools that would not appear in the top quartile of the table.
  2. Sometimes grades improve as a result of appeals or remarks and we may update the data periodically, as long it does not distort the results of schools which have not given us their remarks. We encourage all schools to supply corrections or additions by contacting us at
  3. Exam results are not the only criteria by which to judge a school. Schools at the top of this table may be very selective on their admissions. Be aware that your child may not necessarily thrive in a high pressure academic environment. Please contact us for advice on choosing the right school.
  4. We make a substantial investment of time and effort in preparing these tables, and all copyright and database rights in the tables belong to us. Please respect this by not reproducing the tables or the information within them, in whole or in part, without our consent. If you wish to reproduce any of our tables or the information within them then please contact us for details.