Compliance you can prove to Ofsted, before they ask.
Continuous evidence for the standards a school actually carries — indoor air, water safety, thermal comfort, energy. The building keeps the record; you stop chasing it.
Classroom 4
Year 9 · 30 in the room · windows closed
BB101 · daily average ≤ 1,500 ppm · checked every few minutes, all teaching hours
Across the schools we've monitored, the same few things turn up every time.
Heat with nobody in
Over half-term the boiler fires to a timetable set years ago, warming empty classrooms for a week when no child is in. On a large site that's around £400 a day, spent heating no-one.
Stuffy rooms by mid-morning
A class of thirty pushes CO₂ past the 1,500 ppm BB101 line before break. Tired air, tired pupils — and no-one watching the number until someone complains.
The room that changed use
A store cupboard quietly becomes a teaching space. On the plan it needs no ventilation; in reality there are children in it all day. The data shows it long before an inspector would.
A real UK secondary school. Every classroom, five-minute logs, one month of teaching:
of rooms breached at least once
of teaching minutes too cold
of teaching minutes too hot
of minutes with CO₂ over 2,000 ppm
Schools don't fail safely — they run cold, hot and stuffy, often on the same day. A one-off survey misses all of it.
Air quality stopped being a box ticked at construction.
BB101 tells an architect how to design a compliant classroom. It says nothing about whether the room stays compliant in week thirty. For years, that gap was nobody's problem.
In February 2026 the DfE's new guidance closed it: schools should regularly monitor ventilation and air quality across their buildings — and be able to show the data. The duty moved from the design stage to every teaching day.
And it lands hardest on the children: a child breathes roughly twice the air an adult does for their size, so a stuffy room reaches them first. Stale air is lost teaching time.
The DfE's CO₂ traffic light — the new common language for school air.
Show it simply, then act on it.
A clear view is genuinely useful — at a glance, how each block's air, heat and water are doing, on a floorplan anyone can read. Most platforms stop there.
We don't. When a room crosses a line — CO₂ over BB101, a hot tap below 50°C, a classroom overheating against TM52 — the reading becomes a job. It goes to the caretaker or the contractor in the tools they already use, with the room, the standard and the likely fix, and it's chased until it's closed.
A chart has never aired a classroom. The view and the action — not one or the other.
No new app for your team to learn.
The work goes where they already are — email, Microsoft 365, your helpdesk or CAFM — with the location, the standard and a suggested fix.
If it isn't actioned in time, it climbs: to the site manager, to the trust, to the duty board, until it's closed with evidence. The email can't get lost.
The evidence is already written.
When a governor, an inspector or the trust asks how the estate is doing, the answer isn't a scramble. The record built itself — every reading, every job, every fix, on one timeline you can scroll.
A certificate proves one day a year. This proves the rest of it.
The money moved the same way.
The Public Sector Decarbonisation Scheme is into a £1.17 billion phase. The DfE expects every school to hold a climate action plan. The newest learning-estate programmes pay out over twenty-five years — only while the building keeps hitting its measured benchmarks.
The common thread: funding follows measured outcomes, not promises. The same per-room log that proves a classroom's air also proves the kWh saving behind the bid. One install, both jobs.
Your school is heating empty classrooms.
Schools typically waste 20–30% of their energy out of hours — evenings, weekends and holidays. Across measured schools: 53% of gas burned with nobody in, 97 kW running at 3am, holiday classrooms held at 21–27°C when 12°C protects the building.
Put your annual spend into the estimator and see what your school is quietly wasting — and the pathway from controls to solar to a school microgrid.
See what your school is quietly telling you.
A scoping call, and a first read on the air, heat and water across your site.