The Foundation has secondary schools in Wassenaar, Oegstgeest and Sassenheim. Primary and secondary education is provided in The Hague at the International School of The Hague. The European School of the Hague Rijnlands Lyceum started with primary in August 2012 and with secondary in 2014. In 2011 the Eerste Nederlandse Montessorischool, a Dutch primary school, joined the foundation.