This paper investigated the effectiveness of delivering Stepping Stones Triple P (SSTP), a parenting intervention program, in special education settings and by education professionals to positively influence the potential of families of children with a disability. Questionnaire responses from 216 parents of children with a disability who received SSTP in special education settings and by education staff were extracted from a pre-existing dataset. The questionnaires were administered before and after the program and again 12 months later. Questionnaires included measures of child problem behaviour, parenting practices, parental adjustment, parental self-efficacy, and program satisfaction. Results from a series of MANOVA and ANOVAs revealed significant improvements in parent-reported child behaviour, parenting practices, parental adjustment and parental efficacy. Results were maintained at 12-month follow-up. Qualitative comments revealed that 35% of parents continued to seek support from education professionals due to the positive experience. Overall, these findings suggest that school-based SSTP is effective in enhancing the behaviour of children with disabilities by augmenting the skillset and confidence of their parents. An avenue for future research is to specifically explore the effect of school-based SSTP on the partnership between home and school.