Established in 1977, d’Overbroeck’s has a strong local, national and international reputation for its distinctive and highly successful ethos and the excellence of its educational provision. It has 460 students aged 11 to 18 and this year was ranked 14th in The Times national league table of co-educational independent schools.
This partnership with OIEG “gives us the platform and the confidence to achieve the developments that we passionately want to see for our students and staff in the years to come”, says Sami Cohen, principal of d’Overbroeck’s, while David Brown, co-founder of OIEG, believes d'Overbroeck's “will bring a new dimension to OIEG’s existing provision”. Bowmark invested in OIEG (formerly ISIS Education Group) in 2014.
Associated investment

Oxford International
Oxford International expanded its provision in both secondary and higher education, both organically and through acquisition
Read more
In the news
6 March 2025
Bowmark launches second annual cross-portfolio women’s mentoring scheme
Read more
24 February 2025
CubeLogic reports strong progress in 2024
Read more