Pieter has been awarded the Royal honour of Knight of the Order of Orange-Nassau, which recognises his service to education. The honour is bestowed for his outstanding contribution to innovation in education, and for his support in introducing digital technology, STEM and internationalisation at local and national levels.

Pieter has been a long-standing and active member of IFIP TC3 WG3.1 and has shared his considerable experience and expertise with IFIP TC3 over many years. In terms of his national work, from 1988, he was the project manager of over 100 projects focusing on ICT in education, and from 1997 he became the national process manager concerned with integrating ICT in education on behalf of the Dutch Government. As an inspector of education from 2000, he continued with special duties in the field of ICT in education, whilst, at the same time, he was involved in several Dutch, European (eTwinning) and UNESCO projects and was chair of IFIP TC3 WG3.1. From 2008, he was the principal of the Helen Parkhurst Dalton School, and presented at IFIP conferences and published papers about development and implementation of ICT uses in secondary schools. In 2014, he retired from his role as principal in the school, but remained involved in ICT, in consultancy, programme management and aspects of internationalisation in schools. He is still the chair of the Union for Nature, Life and Technology, which is an interdisciplinary subject in secondary schools.