EN 12464-1 sets 300 lux on desks and 500 lux on the board, UGR ≤ 19, Ra ≥ 80. Modern Saudi schools (Vision 2030 education clusters) add tunable white for circadian alignment: 6500K morning alertness, 4000K mid-day work, 3000K creative sessions. Smart-board glare must also be controlled, direct fixtures above the board are forbidden.
Four ideas to carry into the next specification conversation you have.
EN 12464-1. Board needs higher vertical lux because all student eyes converge there.
Children's eyes are more sensitive to glare than adult eyes, they don't filter blue as much. UGR matters more here.
Studies in Germany and KSA show 10-20% improvements in reading speed and attention with HCL schedules, cool morning, neutral day, warm afternoon.
Veiling reflections kill content readability. Fixtures within 1 m of the board must be aimed away or be wall-washers, not direct downlights.
Working-plane lux and special-case requirements for school spaces.
| Space | Lux | Notes |
|---|---|---|
| Classroom (general) | 300 desk / 500 board | UGR 19, Ra 80 |
| Art / craft | 500-750 | Ra 90 for colour |
| Computer lab | 300 + screen glare control | Indirect light |
| Library / reading | 500 | Glare-free task |
| Lecture hall | 500 + 50 lux step lighting | Steps lit |
| Sports hall | 300-500 (level) | Higher for competition |
| Cafeteria | 200 | Social |
| Corridor | 100-150 | Walkway |
Five practices that lift student attention and reduce eye strain.
08:00 cool 5000K bright. 11:00 neutral 4000K. 14:00 warm 3000K for creative sessions. Hamburg studies showed 15% reading-speed gains.
Linear diffused luminaires aimed downward, never direct downlights. Wall-wash uplights on the board wall preserve contrast.
Daylight sensors near windows dim luminaires. South-facing Saudi classrooms get 10,000+ lux from windows, fixtures must dim or off when sufficient.
Tablets, Chromebooks, projectors. Veiling luminance kills usability. EN 12464-1:2021 added a screen-glare term (Lmean ≤ 1500 cd/m²) specifically for this.
Reading colour-coded materials, art class, science labs. Schools using Ra 90+ report fewer headache complaints and better recall on colour-dependent tasks.
We ship classroom-ready packages: tunable-white panels, DALI-2 schedule preset, board-zone uplights, and Ra ≥ 90 across all student-facing fixtures.
Practical lighting know-how from NLC Academy. No spam, unsubscribe anytime.
By subscribing you agree to receive NLC emails.