NOTICE: Surrey Place OPSEU members began strike action on May 25, 2026. 

For updates on impacted services and more, visit our Strike Information page.

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AUTISM SERVICES
  • Overview
  • Early Childhood / Preschool (0–6)
  • School-Age (6–18)
  • Adult Autism Services (18+)
  • Urgent Response Services (URS)
  • Foundational Family Services
  • ABA Groups & Camps
  • Psychology & Psychiatric Clinic
  • Respite
Developmental & Disability Supports
  • Overview
  • Infant Hearing Program
  • Blind-Low Vision Program
  • Behaviour Therapy
  • Speech-Language Pathology
  • Occupational Therapy
  • Fetal Alcohol Spectrum Disorder (FASD)
  • Social Work
  • Medical Services
Free Community Programs
  • Overview
  • Social Groups (Child, Youth, Adult)
  • Wellness Services
  • Camps & Recreational Programs
For Professionals & Partners
  • Overview
  • SPO Registration
  • School Support Program
I'm New - Start Here
  • How to Get Support
  • Diagnosis Next Steps
  • SmartStart Hub
  • Coordinated Service Planning
Intake & Registration
  • Online Intake Form (0-18)
  • Online Intake Form (18+)
  • Register for a Program
  • Book an Appointment
Funding & Costs
  • Ontario Autism Program (OAP)
  • Fees and Payments
Eligibility & Who We Serve
  • Autism Services
  • DSO Toronto Region
  • FASD Services
  • Infant and Child Development
Resources & Tools
  • Resource Library
  • OAP Next Steps
  • Mental Health Toolkit
  • Podcast
Community Supports
  • Community Food Pantry
  • Community Outreach
  • Upcoming Events
  • Community Network of Specialized Care
Education
  • Clinical & Student Placements
  • Medical Placements
  • Psychology Practicum
  • Psychology Residency
Research & Publications
  • News, Stories and Events
  • Reports (Annual, Clinical, Program)
Events & Workshops
  • Upcoming Workshops
  • Parent Trainings
  • Professional Trainings
  • OAP funded
  • Wellness Services
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  • Donate
  • Self-Advocate Council
  • Family Advisory Council
  • Caregiver Peer Mentor Programs
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About Us
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  • News & Announcements
  • Our Team & Leadership
  • Equity, Inclusion & Accessibility
  • Policies, Reports & Disclosures
Contact Us
  • Contact Us
  • Foundation
  • Urgent Response Services
  • Share Your Story
  • Feedback & Complaints
  • Join Our Newsletter

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  4. Treatment Research and Education for Autism and Developmental Disorders (TRE-ADD)

Treatment Research and Education for Autism and Developmental Disorders (TRE-ADD)

TRE-ADD offers comprehensive care to support children and youth with complex needs

How to register:

Inquire Online

Need Further Assistance?

Call: 1-833-575-KIDS(5437)

Helping young people succeed at school and in their community

In the TRE-ADD program, we assess and treat complex behaviours, such as aggression or self-injury. The goal is to help young people with complex needs confidently participate in school and community so they can pursue their possibilities.

The TRE-ADD team includes professionals from several disciplines, including medical, education, social work, and family support, ensuring your child or teen receives the most comprehensive care possible.

Who we support

TRE-ADD is for children and youth ages 6–18 with:

  • Autism or related intellectual and developmental disabilities
  • Complex behavioural challenges

Forms of support

There are two forms of TRE-ADD support:

School-based services and community support services.

TRE-ADD School-Based Services

School-based services are in partnership with local school boards to help students safely return to a community classroom. Students are admitted into one of six treatment classrooms, where they receive clinical (i.e., functional behavioural assessments; medical or medication review) and educational assessments, and an individualized treatment plan for the student and their family.

TRE-ADD Community Support Services

Community Support Services of TRE-ADD provides community-based services and short-term consultation to caregivers and professionals who support children and youth with complex behaviours. We offer a range of supports, including:

  • Free Wellness events
  • Referrals and funding resources
  • Access to support groups
  • Brief consultation and support strategies
  • Professional development and training

To be eligible for this service, clients must meet the following criteria:

  • School-aged children from 6 to 18 years old
  • Diagnosed with autism and developmental or intellectual disabilities
  • Have multiple and complex behavioural needs (e.g., aggression, self-injury, property destruction)
  • Reside in the Toronto, Peel or York regions

School-Based TRE-ADD partner with:

  • Toronto District School Board (TDSB)
  • Toronto Catholic District School Board (TCDSB)
  • Peel District School Board (PDSB)

Our interprofessional team includes:

  • Clinical Supervisors, (BCBA/BCBA-D)
  • Senior Therapists (BCBA)
  • Supervising Therapists (BCBA)
  • Instructor Therapists and Behaviour Support Workers
  • Medical Director
  • Registered Nurse
  • Family Support Coaches
  • Social Worker
  • Speech Language Pathologist
  • Psychologist

We provide short-term services to those who are not eligible for our TRE-ADD School-Based Services, where appropriate and upon request.

Register for support

Inquire online

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