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The Early Development Instrument (EDI) is a short, teacher-administered checklist measuring children’s readiness to learn at school according to five domains of development: physical health and well-being; social knowledge and competence; emotional health/maturity; language and cognitive development; and general knowledge and communication skills.

The EDI is the primary tool used by the Consortium in their international technical assistance initiative. The following resources provide background information about the EDI, explanations and instructions for administering it, validity and reliability statistics and examples of how EDI data can be used.

Please note that all EDI users are required to enter into a data sharing agreement with the Offord Center for Child Studies, who holds its copyright. 

Background Information

• EDI – Information Summary (PDF)
  
• EDI – A Brief Description (PDF)
  
• EDI Handbook (PDF)
  
• Key Items Based on International Comparisons (PDF)

The Early Development Instrument

• EDI – Short Version (PDF)
• EDI – Long Version (PDF)
• EDI Guide (PDF)

Implementation and International Applications

• Steps in Adapting and Implementing the EDI (PDF)
• Adaptation of the EDI for International Contexts – Tasks (PDF)
• The EDI: A Population-based Measure for Communities – International Applications (PDF)
  
• International EDI data base (password-protected Word document)

Maps and Community Mapping

• EDI Mapping Brochure (PDF)
  
• Map - EDI around the world (PDF)
  
• Map - EDI completion in Canada (PDF)