Toddler Early Intervention (0-2)
Preschool Intervention (3-5)
Earlier is better. Research consistently shows that intervention before age 3 produces the strongest outcomes due to neuroplasticity. However, most Ontario children are not diagnosed until age 3-4, and OAP waitlists mean many do not receive core services until well past the preschool window. Reducing diagnostic and service wait times is critical.
Commitment to Accuracy: Our data is verified against official government reports (FAO, MCCSS), peer-reviewed scientific literature, and accessible public records. Last updated: March 24, 2026.
Verified Facts
Early Start Denver Model (ESDM) delivered to children aged 18–30 months produced significant gains in IQ, adaptive behaviour, and autism severity — some children no longer met diagnostic criteria at follow-up
Cochrane systematic review finds evidence that early intensive behavioural intervention (EIBI) may produce positive effects on adaptive behaviour and communication for young children with ASD (low certainty of evidence)
WHO recommends accessible, community-based early interventions for children with autism — timely evidence-based psychosocial interventions improve communication and social engagement
Under the Ontario Education Act, every student with special needs is entitled to an Individual Education Plan (IEP) and access to an Identification, Placement and Review Committee (IPRC)
88,175, children are registered in the Ontario Autism Program