What Netwerk Ziezon does

Netwerk Ziezon is a Dutch national expertise network, founded in 2000 and headquartered in Den Haag, that coordinates educational support for chronically and long-term ill students (Onderwijsondersteuning Zieke Leerlingen, OZL) across the Netherlands. The network connects consulenten OZL employed at regional educational advisory bureaus (e.g., ABC Onderwijsadviseurs, BCO Onderwijsadvies, CED-Groep, Kluppluz, Bazalt Groep, 1801 jeugd & onderwijsadvies) and at Educatieve Voorzieningen inside all eight Dutch University Medical Centers, including Emma Children's Hospital AMC/VUmc, Wilhelmina Kinder Ziekenhuis UMC Utrecht, UMCG Groningen, LUMC, Maastricht UMC+, Radboudumc, and the Prinses Maxima Centrum voor Kinderoncologie. Together these consultants support primary, secondary, and MBO schools, parents, and children aged 4-18 in maintaining educational continuity at home, in hospital, or at school.

The portfolio centers on human expert consulting rather than software products, augmented by a substantive knowledge corpus: more than 25 illness-profile brochures, the quarterly Ziezon Magazine, the annual Examendossier cataloguing exam accommodations, training programs, and the KlasseContact digital-classroom service that enables remote lesson participation. The network maintains the Kennisfabrieq knowledge platform and is an active member of HOPE, the European umbrella publishing the Charter of HOPE and the academic journal Continuity in Education.

The business model is non-commercial and publicly funded: consulenten are paid by their host advisory bureaus and UMCs, while Netwerk Ziezon itself is hosted by Onderwijsontwikkeling Nederland. The network earns no fee from end schools or families; revenue flows from Dutch public education and healthcare budgets allocated to its delivery partners. With 26 employees, the organization focuses on coordination, quality standards, publications, and professional development for the consulenten OZL workforce, marking its 25th anniversary in September 2025.

Name

Netwerk Ziezon

Legal name

Netwerk Ziezon

Website

https://ziezon.nl

Company type

Private

Founded year

2000

Operating status

Operating

Headcount range

11–50 employees

Short description

Netwerk Ziezon is a Dutch national non-profit network, founded in 2000 and based in The Hague, that coordinates educational support consultants (consulenten OZL) across regional educational advisory bureaus and all eight Dutch University Medical Centers to help chronically ill students aged 4-18 continue their schooling.

Ownership category

akta.pro rank

Headquarters

HQ city

Den Haag (The Hague)

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Others

Distribution channels1 record

Marketing channels10 records

Core offering

Netwerk Ziezon is a Dutch national expertise network that coordinates consulenten Onderwijsondersteuning Zieke Leerlingen (OZL) — specialized educational consultants employed at regional educational advisory bureaus and at Educatieve Voorzieningen inside the eight Dutch University Medical Centers — who advise schools, parents, and students on how chronically or long-term ill children can continue their education at home, in school, or in hospital. The network delivers training, publications (brochures, Ziezon Magazine, Examendossier), expert groups, and digital tools such as KlasseContact, and operates as the Dutch member of HOPE, the European umbrella for hospital teachers.

Product overview

Netwerk Ziezon is a national Dutch expertise network for educational support to sick students (Onderwijsondersteuning Zieke Leerlingen - OZL). The organization operates as a coordinated network of consulenten (consultants) working at educational advisory bureaus and hospital-based Educational Facilities in University Medical Centers across the Netherlands. The portfolio consists of consulting services, educational resources (brochures, magazine), examination support documentation (Examendossier), and the digital classroom connection program KlasseContact. The organization does not develop or sell software products but provides expert guidance and informational materials to help schools support chronically and seriously ill students in continuing their education.

Differentiator

Problem solved

Functional benefit

Products and services

• Consulenten Onderwijsondersteuning Zieke Leerlingen (OZL) Nationwide network of expert OZL consultants who provide educational advice and support to schools, parents, and students so that children with chronic or long-term illness can continue their education at home, at school, or in hospital.
• Ziezon Brochures (Ziektebeelden) Downloadable illness-specific brochures (over 25 topics) that provide information and guidance for teachers who have a student with a particular chronic or serious illness in their class.
• Ziezon Magazine Quarterly magazine that explains how educational support for chronically and seriously ill students is organized in the Netherlands, available as a free download.
• KlasseContact Digital classroom connection service that enables sick students to follow lessons at their regular class remotely from home or hospital, with consulenten OZL assessing suitability, coordinating placement, and monitoring usage.
• Examendossier Annual guide that documents all possible examination accommodations available for sick students, enabling schools to adapt examinations to the capabilities of chronically ill or convalescing pupils.
• Educatieve Voorzieningen (Educational Facilities at UMCs) Hospital-based educational facilities located inside Dutch University Medical Centers where consulenten OZL deliver instruction and educational support to children during hospitalization.

Quantifiable outcome

• One in seven students has a chronic illness or is long-term sick

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

13 partnerships are on record, tiered core and minor.

• HOPE (Hospital Organisation for Pedagogues in Europe)coreStrategic or Co-development Partner · 1 January 2000HOPE is the European umbrella organization for hospital teachers and consulenten OZL. The organization brings together educational professionals working with sick children across Europe. Netwerk Ziezon is an active member, with many consulenten OZL in the Netherlands being members of HOPE. The Charter of HOPE, establishing rights to education for sick students, has been published in 44 languages including Dutch and Frisian. HOPE publishes the academic journal Continuity in Education.
• Wilhelmina Kinder Ziekenhuis (WKZ), UMC UtrechtcoreOthersThe WKZ has its own school for children in the hospital. Consulenten OZL at WKZ provide educational services to hospitalized children and developed resources like the Adem in Adem uit board game for Cystic Fibrosis education. The WKZ also hosts consulenten who developed Studio24 video resources for teachers.
• Stichting Educatieve Voorziening AMC/VUmc (Emma Kinderziekenhuis)coreOthersThe Emma Children's Hospital (part of Amsterdam UMC) hosts an Educatieve Voorziening with multiple consulenten OZL providing educational support for sick children. The hospital celebrated its 150th anniversary in 2015.
• UMCG Educatieve Voorziening GroningencoreOthersThe UMCG's Educatieve Voorziening employs multiple consulenten OZL providing educational support to sick children in the northern Netherlands. The facility is part of Wenckebach Instituut.
• UMC Utrecht locatie WKZcoreOthersThe Wilhelmina Kinderziekenhuis (WKZ) within UMC Utrecht houses an Educatieve Voorziening with consulenten OZL providing educational services to hospitalized children.
• Prinses Maxima Centrum voor KinderoncologiecoreStrategic or Co-development PartnerAs of June 2018, all children with cancer in the Netherlands are treated at the Prinses Maxima Centrum. The center hosts an Educatieve Voorziening with consulenten OZL and collaborates with Vereniging Kinderkanker Nederland to develop educational brochures and resources for teachers.
• Vereniging Kinderkanker NederlandcoreStrategic or Co-development PartnerThe patient organization for childhood cancer provides support to families and collaborates with Netwerk Ziezon on educational resources, including brochures about various forms of childhood cancer for teachers.
• SKION (Stichting Kinderoncologie Nederland)minorStrategic or Co-development PartnerSKION is a collaboration of pediatric oncology departments of academic hospitals in the Netherlands, established in 2002. The organization supports research and treatment coordination.
• LWOE (Landelijk Werkverband Onderwijs en Epilepsie)minorStrategic or Co-development PartnerThe national working group for education and epilepsy provides educational consultants who advise and support children and youth with epilepsy throughout the Netherlands, covering primary, secondary, and vocational education.
• InstondominorGTM or Marketing PartnerOrganizer of the annual IB/KC Dag (Internal Supervision/Care Coordinator Day) where Netwerk Ziezon maintains an information stand to reach educational professionals.
• Onderwijsontwikkeling NederlandcoreOthersThe network is associated with Onderwijsontwikkeling Nederland. Contact email is [email protected]. The network maintains the Kennisfabrieq (Knowledge Factory) platform.
• Stichting Kind en ZiekenhuisminorGTM or Marketing PartnerFoundation focused on children and hospitalization that collaborates with Netwerk Ziezon at events like IB/KC Dag.
• Stichting Zorgeloos naar SchoolminorGTM or Marketing PartnerOrganization focused on school support for sick children that partners with Netwerk Ziezon at information events.

Scale indicators2 records

Recent moves6 records

Expansion highlights4 records

Broad incumbents

• CED-Groep: Dutch educational advisory bureau employing consulenten OZL in Midden Nederland; provides broader educational advice services with OZL support as one specialized offering.
• Bazalt Groep: Dutch educational advisory organization providing consulenten OZL in Haaglanden and Zeeland regions; offers wider school advisory services with OZL sick-student support as a specialized program.
• HOPE (Hospital Organisation for Pedagogues in Europe): European umbrella organization for hospital teachers and consulenten OZL; Ziezon is an active member. Operates at a broader European level with the same mission of supporting education for sick children.
• 1801 jeugd & onderwijsadvies: Dutch educational advisory firm employing consulenten OZL across multiple regions; broader educational consulting with OZL sick-student specialization.
• Onderwijsversterkers: Dutch educational advisory bureau hosting consulenten OZL; provides broader school support services with OZL sick-student support as one element of its portfolio.

Direct peers

• Stichting Zorgeloos naar School: Dutch nonprofit foundation supporting school attendance and education for sick children; directly comparable mission of helping sick students continue their education, often partnering with Ziezon at information events.
• Stichting Kind en Ziekenhuis: Dutch foundation focused on the wellbeing of children during hospitalization; shares the broader pediatric-hospitalized child support mission and collaborates directly with Ziezon.
• LWOE (Landelijk Werkverband Onderwijs en Epilepsie): Dutch national working group for education and epilepsy, providing educational consultants nationwide; highly comparable model of national coordination of education-focused consultants supporting chronically ill students.

Others

• Vereniging Kinderkanker Nederland: Dutch patient organization for childhood cancer that collaborates with Ziezon on educational brochures for teachers; adjacent peer in the chronically ill children support ecosystem.
• KlasseContact: Digital classroom connection technology partner enabling sick students to attend lessons remotely; Ziezon's consulenten OZL coordinate and assess suitability for KlasseContact placements.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/Onderwijsontw
• YouTubeyoutube.com/channel/UCysQRN5G2aHFQtyLnjFPNHw
• LinkedInlinkedin.com/company/ziezon

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Netwerk Ziezon