Could Gillian Keegan identify Raac if she saw it?

Education secretary Gillian Keegan: ‘There’s 5% of schools … that have not responded to the survey. Now, hopefully all this publicity will make them get off their backsides.’ Photograph: Kirsty Wigglesworth/AP

Re your article (Gillian Keegan tells education leaders to ‘get off backsides’ and answer Raac survey, 5 September), I’m a primary school site manager (a caretaker, in the old money) who filled one of these Department for Education spreadsheets out back in July. The relevant question read: “Are there visible concrete planks (Raac) in ceilings or walls to any of the school blocks? Answer yes, no or don’t know.”

I’ve been a site manager for 10 years now and had never heard of Raac. So, I answered “don’t know”. Because I didn’t know. Had I the structural engineering knowledge to confidently identify Raac, I would most probably be in a different field of employment and enjoying a somewhat larger salary.