September Onderwijs

What September Onderwijs does

September Onderwijs is a Dutch professional services firm headquartered in Utrecht that delivers training, coaching, and professional development to teachers and school teams across the primary (PO), secondary (VO), and vocational (MBO) education sectors in the Netherlands. Founded in 2009 and operating for 15+ years, the company combines bespoke in-company programs with open-enrollment courses, supported by proprietary methodologies such as "Groeigeluk" and a customer satisfaction score of 8.9/10. The delivery model is built on a network of 50+ trainers with classroom experience, complemented by a core team of 11-50 employees based in Utrecht, and is co-led by founder Tom Zomer.

The business model is B2B, selling training engagements to schools and educational institutions across the Netherlands. The company holds CRKBO certification and is an NRTO member, allowing schools to access subsidized training budgets through certified providers. Revenue is generated through fee-for-service training contracts and open-course tuition, with subscription-style demand generation via an 8,000+ subscriber newsletter. The firm is bootstrapped and founder-owned, with no external funding disclosed. The company reports no proprietary technology platform and no AI/ML capabilities; its core offering is fundamentally human-expert-led, augmented by a partnership with Catwise for specialized training content.

Customers include a mix of named primary schools, secondary schools, and MBO institutions across the Netherlands, suggesting a diversified, distributed revenue base rather than dependence on a few large accounts. The company's expansion path to date has been horizontal within the Dutch education market, broadening the product portfolio across segments and extending specialist offerings through partner integrations rather than geographic or vertical moves.

Name

September Onderwijs

Legal name

September Onderwijs

Website

https://septemberonderwijs.nl

Company type

Private

Founded year

2009

Operating status

Operating

Headcount range

11–50 employees

Short description

September Onderwijs is a Utrecht-based Dutch professional services firm that delivers training, coaching, and professional development to teachers and school teams across primary, secondary, and vocational education sectors in the Netherlands.

Ownership category

akta.pro rank

Product category

Education and Training Services

NAICS

Professional and Management Development Training (611430), Professional and Management Development Training (61143), Educational Support Services (61171)

SIC

Services-Educational Services (8200), Services-Management Consulting Services (8742)

akta.pro primary industry

Teacher Training, Professional Development & Education Leadership (BPADAKAC)

Keywords

• Teacher training services
• Educational coaching programs
• Professional development
• Classroom management training
• Didactic coaching

Headquarters

HQ city

Utrecht

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Marketing or Sales, Operations, Others

Revenue model

1. Incompany Training: Customized training programs delivered at schools throughout the Netherlands, covering various educational topics including didactics, pedagogy, classroom management, and student motivation.
2. Individual Coaching: One-on-one coaching services for educators and teachers, including personal development and career coaching.
3. Development Trajectories: Customized educational development programs tailored to specific school needs, including assessment, training, and implementation support.
4. Webinars and Workshops: Free webinars and workshops on educational topics, serving as both marketing and standalone revenue streams.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels8 records

Core offering

September Onderwijs delivers customized training, coaching, and educational advisory services to schools across the Netherlands in the primary (PO), secondary (VO), and vocational (MBO) sectors. Offerings include incompany team training (e.g., OOP'er als professional, Pedagogisch handelen, Activerende werkvormen en didactiek, Formatief handelen, EDI, Differentiëren in de klas, Klassenmanagement, Didactisch coachen, Leskwaliteit, Leerlingen motiveren), multi-session education development trajectories (Onderwijsontwikkeling), individual courses and one-on-one coaching, SLB career-guidance coaching, branded programs such as "Zicht op de Les," "Coachend lesgeven," and "Gepersonaliseerd leren," plus free webinars and downloadable resources.

Product overview

September Onderwijs is a Dutch educational training organization providing training, coaching, and educational advisory services for PO (primary), VO (secondary), and MBO (vocational) education across the Netherlands. The company's core offerings include incompany training programs (customized training delivered at schools), individual courses and coaching services, and educational development trajectories. Key training programs include OOP'er als professional, Pedagogisch handelen, Activerende werkvormen en didactiek, Formatief handelen, EDI (Expliciete Directe Instructie), Differentiëren in de klas, Klassenmanagement, Didactisch coachen, Leskwaliteit, and Leerlingen motiveren. Additional services include SLB (studieloopbaanbegeleiding) for career guidance, webinars, and free downloadable resources. The company operates under the 'Groeigeluk' (growth happiness) methodology and holds CRKBO certification. Training is delivered incompany at client schools or online, with programs tailored to each school's specific needs. Notable statistics include an 8.9 average rating and 15+ years of experience.

Differentiator

Problem solved

Functional benefit

Products and services

• Incompany Trainingen Customized training programs delivered at the school location for teacher teams across primary, secondary, and vocational education in the Netherlands. Programs include OOP'er als professional, Pedagogisch handelen, Activerende werkvormen en didactiek, Formatief handelen, EDI (Expliciete Directe Instructie), Differentiëren in de klas, Klassenmanagement, Didactisch coachen, Leskwaliteit, and Leerlingen motiveren. Intended for school teams that need practical, immediately applicable classroom tools.
• Onderwijsontwikkeling Customized multi-session education development trajectory that maps a school's learning needs, designs a complete program with stakeholder buy-in, delivers targeted training, and embeds sustainability. Intended for schools seeking structural change rather than one-off events.
• Individuele Cursussen en Coaching Individual professional development for teachers, mentors, and educational professionals, including subject-specific courses, one-on-one coaching (personal development and career coaching), the Rotterdamse Lerarenbeurs, career advice, study choice guidance, and Edurate. Coaches operate across the Netherlands including Amsterdam, Rotterdam, The Hague, and Utrecht.
• Zicht op de Les Practical incompany training based on researcher Hannah Bijlsma's book "Zicht op de Les," teaching observation techniques and methods to improve teaching quality. Intended for school teams that want to systematically raise lesson quality through structured observation.
• SLB (Studieloopbaanbegeleiding) Training Career-guidance coaching training that develops mentors' conversational skills and understanding of executive functions for guiding students. Used by MBO institutions including ROC Mondriaan for SLB and peer-learning programs.
• Webinars Free online webinar series for educators, covering topics such as 'De Wondervraag' coaching technique and 'Coachende houding' (coaching attitude). Functions both as a standalone educational offering and as demand generation for paid training programs.
• Coachend lesgeven Training program that teaches teachers to adopt a solution-focused coaching approach in their teaching, focusing on student motivation and leveraging student strengths.
• Gepersonaliseerd leren Training program where students determine their own learning pace and method, with the stated goal of increasing engagement, motivation, and achieving higher learning outcomes. Intended for schools implementing personalized learning approaches.

Quantifiable outcome

• Average customer satisfaction rating of 8.9/10
• +3 more outcomes

Named customers27 records

Segments5 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

One partnership is on record.

• CatwisecoreStrategic or Co-development PartnerCollaboration between September Onderwijs and Catwise for specialized training offerings. Catwise focuses on care and inclusive education (zorg en passend onderwijs), complementing September Onderwijs's broader educational training services.

Scale indicators4 records

Recent moves4 records

Expansion highlights3 records

Direct peers

• KPC Groep: Established Dutch education training and development organization serving primary and secondary schools nationwide. Closely comparable scope (school-team development trajectories, customized incompany programs) and target buyer.
• Bazalt Groep: Dutch education consultancy and training provider offering professional development for teachers and school teams. Directly comparable in product (incompany training, coaching), customer base (PO/VO/MBO), and B2B GTM in the Netherlands.
• Bureau ICE: Dutch education consultancy offering incompany training, coaching, and organizational development for schools. Comparable product portfolio and direct B2B sales to Dutch schools.
• Cedrus Onderwijsadvies: Dutch provider of training, coaching, and advice for schools and educational teams. Comparable offering (didactics, classroom management, team coaching) to PO/VO and B2B sales motion.
• Onderwijs Maak Je Samen (OMJS): Dutch training and coaching provider focused on teacher professional development and school team learning. Comparable customized incompany training delivery and Dutch K-12 target market.
• APS (Academie voor Pedagogiek en Schoolontwikkeling): Dutch training and development institute for school leaders, teachers, and school teams. Comparable offerings in pedagogical/didactic training and Dutch education sector focus.
• Edux Onderwijsadvies: Dutch education advisor offering training, coaching, and development programs for schools and teachers across PO, VO, and MBO. Overlapping service lines and customer profile.

Broad incumbents

• NCOI Opleidingen: One of the largest Dutch professional training providers, with broad catalog including education-sector programs. Larger and more diversified but overlaps in teacher-targeted training.

Regional players

• SBL Opleidingen: Dutch provider of teacher training and professional development programs serving Dutch schools. Comparable product offering in a similar Dutch-focused segment.

Emerging players

• ICLON (Leiden University Graduate School of Teaching): Leiden University's teacher training and professional development unit, offering courses and programs for teachers in the Netherlands. Comparable in content (teacher PD) but academic rather than commercial GTM.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/septemberonderwijs
• LinkedInlinkedin.com/company/septemberonderwijs
• Instagraminstagram.com/septemberonderwijs

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 September Onderwijs