Koos van Riezen has extensive experience in educational leadership and governance, currently serving as Bestuurder at Stichting Vrije School Noord en Oost Nederland since August 2022 and as a member of the Commissie Code Goed Onderwijsbestuur at VO-raad since March 2023. Koos van Riezen operates as a part-time interim leader and supervisor through Koos van Riezen interim leiderschap since April 2021, focusing on organizational development and coaching executives. Previous roles include Interim staffunctionaris Onderwijs en Kwaliteit at Stichting Voortgezet Onderwijs Steenwijkerland-Weststellingwerf, Directeur-Bestuurder at Kits Primair, and Inspector at Inspectie van het Onderwijs. Educational qualifications include a Master's in Management from Utrecht University, a degree in Onderwijskunde from the University of Amsterdam, and additional studies at NHL Hogeschool and Christelijke Hogeschool Nederland.