International Baccalaureate - UK & Global Private Schools

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Global Top 50 IB Schools 2018

If you are seeking to find out the top schools in the World, you must first decide how to measure the results of one curriculum against others and this inevitably causes disagreements over the conversion factors being used. At least, in the case of the International Baccalaureate, one has 4,800 + international schools in 150+ countries all studying the one curriculum – the International Baccalaureate  - with the Diploma Programme for 16 to 19 year old students. It is possible to measure one school against another by its average IBDP points scored by its entire cohort. The maximum score is 45 points and indeed every year an increasing number of students achieve the maximum score of 45 points.

So is it right to measure one school against another by its average points? There are many ways of judging a top school apart from its exam success. Some would claim it is not a fair comparison on the grounds that their admissions process is non selective, but it is nigh impossible to categorise schools by their admissions policies. We maintain that exam scores are a valid starting point.  In this report we give you our own assessment of the Top 50 Private IB Schools in the World. These positions are compiled from the average points achieved by age16+ students taking the Diploma Programme of the IB. The International Baccalaureate Organisation refuses to publish individual school results and we have had to collect these statistics by asking each school individually or using information on websites in the public domain.

We cannot call this a definitive league table because many schools refuse to disclose their exam results. However, the best schools are usually only too proud to proclaim their successes and therefore we believe that the vast majority of top IB schools are in this table. If you are missing then please let us know your details. We only include schools with 20 + students completing the IBDP in a single year. We also include averages based on 100% of the cohort taking the IBDP including those who fail to obtain the Diploma minimum level which is 24 points.


Name Country Avg Score Year Cohort
Anglo Chinese Singapore 41.6 2017 444
Kings College Wimbledon UK 41.1 2018  
Diocesan Boys HK 41 2018 53
St Paul's Coeducation College HK 41 2018  
Godolphin & Latymer UK 40 2018  
German Swiss International HK 39.84 2018  
Sevenoaks UK 39.5 2018 210
Wellington UK 39.3 2018 78
MLC School Australia 38.9 2018  
Abbey School Reading, UK 38.7 2018 27
Ardingly UK 38.6 2018 45
Headington Oxford, UK 38.5 2018 31
Cheltenham Ladies College UK 38.4 2018 46
Bromsgrove UK 38.3 2018 56
Fettes College UK 38 2018 44
King Edwards Boys Birmingham UK 37.9 2018 111
Tanglin Trust Singapore 37.8 2018  
St Joseph's Singapore 37.7 2017  
Southbank International UK 37.6 2018 51
Sha Tin College Hong Kong 37.4 2018  
Hwa Chong Singapore 37.2 2017  
Newington College Australia 37.1 2017  
St Joseph's School Malaysia 37 2018  
Canadian International Hong Kong 37    
NLCS Jeju South Korea 37 2018 92
Global Indian Singapore 37    
CDNIS HK 36.9 2018 114
St Christophers Bahrain 36.55 2018 29
Internl School of Kuala Lumpur Malaysia 36.4 2018 114
Stephen Perse Cambridge UK 36.2 2018 21
Haileybury UK 36.2 2018 58
St Louis of Milan Italy 36.2 2018 n/k
Victoria Shanghai HK 36.2 2018  
Institut Le Rosey Switzerland 36 2018 65
Brentwood UK 36 2018 27
West Island HK 36 2018  
Utahlog International China 36 2018  
Frankfurt International Germany 36 2018  
International School of the Rhine Germany 36 2018  
Marymount UK 35.9 2018 46
St Clares UK 35.7 2018 116
Felsted UK 35.5 2018 24
JESS Arabian Ranches UAE 35.5 2018  
St Georges Rome Italy 35.4 2018  
Bradfield School UK 35.2 2018 30 
Discovery College HK 35.2 2018  
Charterhouse UK 35.1 2018 41 
British International School Milan Italy 35 2018  
Zurich International School Switzerland 35 2016  
International School of Zug Switzerland 35 2017  
St Stephens Rome Italy 35 2015  
South Island HK 35 2018  


You may be surprised by the dominance of schools in the UK, China, Hong Kong and Singapore. Most schools in the EU do not get higher than 37 points, partly because most are non selective on admissions, but you can see our separate EU league table. We are surprised by the absence of USA and Canadian schools, presumably because again they are mostly non selective. The USA has 20 times as many students studying the IB as any other country.  We only include private (fee paying schools) in the table as they dominate the top scores. However, if we were to include UK state schools (i.e. free) there are two schools – Tonbridge Grammar (at 36.9 ) and Dartford Grammar (at 36.8), who would make the lower half. This table is published by Education Advisers Limited (UK) and can be seen on www.IB-schools.com, where you can also find tables for the UK and also separately for Continental Europe (i.e. excluding the UK)

Author – Les Webb
Managing Director
Education Advisers Limited
The Old Stables, Home Farm,
Wateringbury, Kent ME18 5NN

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