Accreditation Process

Guidelines for Managers and Group Leaders:

1. Overview

The Werry Centre offers training and support to Group Leaders delivering the Incredible Years Parent Programme to families and whānau. Research has demonstrated that Incredible Years programmes are most effective when delivered with adherence to the protocols developed by Carolyn Webster Stratton and are responsive to the unique cultural environments within which they are delivered (references).  

In order to achieve these best outcomes, Group Leaders are encouraged and supported to attain a level of competence in programme fidelity and become ‘Accredited.’ This accreditation process requires a commitment by organisations and, on the part of Group Leaders, a determination and an ability to undertake ongoing reflective learning. If you would like to understand more about what is required of your organisation – please refer to ‘Agency Readiness’.

2. Programme Fidelity and Accreditation

The process of upskilling in Incredible Years delivery involves the development of a set of complex skills which maximise the impact of this programme. These skills are also likely to enhance practice in other interventions through increased competence in skills which have general application in family support. This can have a positive impact more widely on your organisation, such as developing confidence and skills in team members to support others in working collaboratively with families, and in using an evidence-based approach. Achieving ‘accreditation’ as a group leader means that the core skills for delivering the programme to a high level of competency have been demonstrated. These skills are indicated below:

   Key elements of fidelity:      

  • Delivering the programme content in entirety and in correct sequence
  • Using IY resources, such as the vignettes on DVD
  • Collaborative skills
  • Relationship building skills
  • Balancing a structured approach with being responsive
  • Cultural responsiveness
  • Setting up opportunities to practice skills
  • Mediating filmed segments to facilitate discussion
  • Capturing parents ideas as general parenting principles
  • Explaining and supporting home activities
  • Assisting parents to set and achieve goals
  • Reflective practice 

Steps for Accreditation

  1. Complete delivery of 2 parent programmes (either 14 week prevention or 18-20 week treatment programme)
  2. Compile documentary evidence from 2 parent programmes (weekly checklist/parent weekly and final evaluations/2 peer evaluations/2 self-evaluations can all be found within the Certification/Accreditation Portfolio)
  3. Attendance at a Consultation Day 
  4. Complete IY USA Certification (Accreditation) application form (including a 1 page application letter and 2 references)
  5. Complete Background Questionnaire for Group Leaders
  6. Submission of a filmed session to an Incredible Years Mentor for formal review to Incredible Years USA 

Accreditation Roadmap (click on the diagram below to see a larger view)

3. Addressing Possible Barriers to Achieving the Best Outcomes


Ensuring that each programme has two Group Leaders who dedicate the recommended time to group delivery, preparation, debrief, ongoing training and Peer Coaching where available.

Ensuring that Group Leaders are resourced with essential components such as a venue, toys, a TV and DVD player, a camera and kai for the group. 


Ensuring that appropriate administrative support is allocated to the programme including typing up notes, photocopying, management of monetary fund to overcome barriers for parents and suitable equipment to record sessions.

Group Leader factors

The following attributes and skills are required to ensure high quality group delivery -

  • Ability and willingness to commit the time and effort required (minimum of one year group delivery)
  • Ability and willingness to undertake self-reflective study as part of ongoing skill development
  • Training and skill level sufficient for the development of required competencies (e.g. demonstrated ability to undertake tertiary study)
  • Background/experience in child development and supporting families
  • Comfortable with a collaborative, non-expert, intervention model
  • Understanding and skill in providing the programme in a culturally responsive manner

4. Support for Maori and Pacific

As part of an objective to achieve more Maori and Pacific Group Leader accreditations, The Werry Centre offers additional cultural support and NZ-based accreditation reviews for a limited number of Maori and Pacific Group Leaders. More information can be found here.

5. Contact Us

The Werry Centre staff provide support for Group Leaders and organisations who undertake this process. If you have any questions regarding the information included in these guidelines, don’t hesitate to contact us.

The Werry Centre is a point of contact for all Group Leaders and their employing agencies, providing advice and training opportunities free of charge to the Incredible Years workforce.

View current list of Accredited Group Leaders

For more information contact Lisa Glynn by email or phone on 09 923 4022 or 027 839 7830.