In this article, Lynne Bianchi shares a project that has proved successful with helping schools to discover and overcome their barriers. "Deep Dives" was a pilot project supported by the Primary Science Teaching Trust (PSTT), initially piloted in Sheffield, and now forms part of the continuing professional development toolkit offered by the Science and Engineering Education Research and Innovation Hub at the University of Manchester. The principle of a Deep Dive involves working on a whole-school basis to support Science Subject Leaders, senior leaders, and head teachers to take stock of science provision in their schools, helping everyone to reach a shared understanding grounded in evidence. At the heart of a Deep Dive is the desire to make a difference--to use what is found out to support an existing programme of change or to trigger ideas and thoughts around what can be enhanced and how learning science can go from strength to strength. The Deep Dives have been shown to help overcome the barriers to change, by making clear the risk of "doing nothing" and the payoffs of addressing the issues.