"Risky" play is an important component of play, which positively affects the cognitive, social and emotional development of children. However, a growing culture of "risk aversion" may be limiting the degree of risk that children are allowed to encounter. We undertook qualitative interviews with eight schools to examine the acceptability of an intervention designed to increase risk and challenge in the school playground (e.g. more rough-and-tumble play and tree climbing). Schools were overwhelmingly positive about the approach and all enjoyed participating. Each school believed many benefits occurred from increasing risk and challenge within play, including better behaviour, improved cooperation between children and increases in physical activity. There were some challenges for schools, but these were generally research related, and all were viewed as acceptable. Indeed, schools found the process enlightening, and upon completion of the two-year intervention often viewed play in quite a different light.