From 2016, all Western Australian schools were mandated to implement the National Quality Standard (NQS) in Kindergarten through to Year 2. Over the first year of implementation, this mandate had varying degrees of success in adoption. This study examined four schools which were identified as having implemented the NQS. A qualitative methodology was employed to examine those factors that supported implementation. A key finding was the integral role played by distributed leadership in adopting new initiatives. Using Activity Theory to conceptualise the data, it was found that psychological ownership was a key factor in enabling distributed leadership. Ownership was enabled when community differences were acknowledged, and time was given for the NQS tool to be reassessed and reconfigured as one's own. Once staff had psychological ownership, they were more likely to support implementation of the NQS. This study has implications for leaders and those implementing the NQS or other initiatives in schools.