Cooling options: Schools and childcare
What to build or change, what keeps it working, the traps to avoid and rough costs.
Protects. Learning, play, attendance and drinking water for children and the staff who look after them.
Key caution. Count shade and surviving trees, not saplings planted.
Options, and what keeps each working
| Option | What it does | Keeps working with | Avoid | Rough cost |
|---|---|---|---|---|
| Cool classroom roofs | A reflective coat or a ventilated second roof over the hottest classrooms. | A line in the school’s maintenance budget. | Roof canopies that are not anchored for monsoon winds. | About US$2.6–US$3.7 per m² for a coating (₹250–₹350 at Indian prices) |
| Shaded play space | Trees, shade structures and less hard paving where children play. | Watering through the holidays, when nobody is at school. | Planting that dies in the first summer break. | About US$2,100–US$42,000 per school, from basic greening to a full package (₹2 lakh–₹40 lakh at Indian prices) |
| Shade on classroom windows | Screens or awnings on the sunny side of classrooms. | Fixing them back after each monsoon. | Making rooms so dark that lights and fans run all day. | No solid range: get local quotes |
| Drinking water at school | Enough safe, cool water for every child, with time in the timetable to drink it. | Filter changes and cleaning. | One tap for hundreds of children. | About US$110–US$530 per point (₹10,000–₹50,000 at Indian prices) |
What the evidence says
- Researchers who studied how age groups use green spaces found that older people asked for benches, shelter during extreme weather and safe paths, while children wanted trees for shade and places to play. Ask both before you design.
How you will know it works. Classroom temperature at 2 p.m. before and after, and school days lost to heat
Five traps that waste cooling money: Buying before diagnosing · Built, with no one to keep it · Green without water · Promising degrees you haven’t measured · A list of activities, not a model.
Before you choose, ask: Does it need electricity, and is the supply reliable in the hottest weeks? · What happens in a power cut: does it stop, or keep cooling without power? · Does it need water, and where will that water come from in a dry spell? · Who services or repairs it, and how fast? · Who owns the running cost each year, and from which budget? · Who can use it: renters, women, older people, people with disabilities? Keep the outcomes apart: a cooler room, comfort, less heat strain, better health and kept income are different outcomes; measure the one you mean.
Costs are rough planning ranges for early budgeting, not quotes. They are Indian prices, from a practitioner’s planning workbook, shown in US dollars at about ₹95 to US$1 (mid-2026) with the rupee range alongside. India has some of the lowest building prices in Asia, so expect most Southeast Asian cities to pay more: see the regional prices below. Where a public figure exists, it is linked. Where no range is solid enough to share, the card says so: get local quotes.
Sources
- Frantzeskaki et al., chapter 11 in Nature-Based Solutions for Cities, 2023. doi.org/10.4337/9781800376762
- U.S. dollar–Indian rupee rates, 2026 (Pound Sterling Live). poundsterlinglive.com/history/USD-INR-2026