The noisiest and most sensitive moments are usually the groundworks, deliveries, and the crane lift, so the disruption tends to be concentrated into specific days rather than stretched across months.
What I’ve found helpful is making a simple disruption plan that covers three things: people flow, noise timing, and communication. For people flow, I like to draw a quick map showing temporary pedestrian routes, staff parking changes, and any areas that need fencing. For noise timing, I’d push the loudest works into inset days, holidays, or at least outside exam windows where possible. For communication, a short weekly update to staff and parents can reduce complaints because people feel informed rather than surprised. I once watched a school avoid a safeguarding mess just by placing clear signage and a second set of temporary barriers a week before the main delivery, so everyone got used to the new route early. The information here helped me get a better grasp of the topic.
Come to think of it, the biggest disruption risk is often not the construction itself, but unmanaged expectations, so a tight plan can make it feel far smoother.