The school population consists of children and young people coming from many places of the world, aged 4 to 18.

On April 21, 2007 Queen Beatrix of the Netherlands officially opened the new school building.

The ISH supports mother tongue education, current provision including Dutch, French, German, Spanish, Italian, Portuguese and soon Romanian and Chinese.

Crash courses in English for beginners are provided in the Learning Support Centre (LSC).

The school also offers a wide range of optional after-school activities, including music lessons.

The ISH hosts its own annual model United Nations conference, known as MUNISH.

The ISH also contributes to THIMUN, the oldest and largest model United Nations conference for high school (secondary) students in Europe and USA.