IASWECE collaborates with the following organisations on a variety of issues, including project support, advocacy for a healthy childhood, and early childhood education.
- Pedagogical Section of the School for Spiritual Science in Dornach
- The Hague Circle – International Council for Steiner/Waldorf Education
- ECSWE – European Council for Steiner Waldorf Education
- HERMMES – Holistic Education, Resilience and Media Maturity in Educational Settings
- Freunde der Erziehungskunst Rudolf Steiners – Friends of Waldorf education
- Alliance for Childhood European Network
- ENSWaP – European Network of Steiner Waldorf Parents
- stART-international – Emergency Aid for Children
- ELIANT-European Alliance of Initiatives for Applied Anthroposophy
- INSEL – Association for the Rythmical Games from Willma Ellersiek
- L4WB – Learning for Well-being Foundation
- Eurochild – Children at the heart of Europe
