The literature has shown that early childhood programs are widely accepted as an intervention that is effective at improving outcomes for families. The current study explores parents’ experiences within a school-based family resource program initiative, StrongStart BC. This qualitative study draws on ecological systems and sociocultural theoretical perspective to examine parents’ perceptions of familial outcomes and program characteristics, in order to identify which characteristics are fundamental for successful outcomes. Thematic analysis was used to analyse focus group data gathered from four program sites as part of a larger study evaluating the effectiveness of StrongStart BC across British Columbia. Results indicate that successful familial outcomes from participation in family resource programs are influenced by a complex interplay of factors related to accessibility and pedagogical characteristics, with accessibility standing out as a fundamentally important consideration. Drawing on the broadly defined concept of accessibility, implications for school-based family resource programs are discussed and recommendations for practice, policy and future research are presented.