But what about the “unknown unknowns” — the hidden barriers, subtle biases and lived experiences that deeply shape inclusion yet rarely appear in performance data? Our new 26,000 Voices report – one of the largest inclusion studies in UK education – exposes a picture of inclusion that is more complex and more inequitable than many realise. In our study, 62 per cent of staff reported feeling excluded due to pregnancy (including IVF and miscarriage experiences) or their current parent/carer status. While 55 per cent of non-religious staff report feeling fully included, the picture shifts dramatically for staff of faith. Beyond engagementThese findings, and the unknown unknowns they reveal across our school population, show we need to move beyond ‘engaging’ students and staff as passive recipients of policies.