StreetLens · Escazú, Costa Rica
Escuela Segura
A child's route to class is public infrastructure, and in Escazú nobody has measured it. This is every school in the canton, rated on the streets inside its own walking catchment, against a standard anyone can check.
A family with a car can drive around a missing sidewalk. A family without one cannot, and their children walk or cycle the same broken block twice a day, every school day. Fixing the streets around public schools reaches exactly the households that have no way around the problem.
There are more than four thousand schools in Costa Rica. The point of doing Escazú properly is not Escazú: it is a standard, a method, and a working instrument that any canton can adopt without inventing its own. Get one right and the rest is repetition.
Most of what makes a school walk dangerous is not a corridor rebuild. It is a crossing that was never painted, a ramp that stops at a kerb, a drain that floods the only sidewalk. Naming those, school by school, turns an overwhelming problem into a fundable list.
Two rings, both measured along the street network rather than as a straight line: the gate ring at 150 m, and the walking catchment at 400 m, about five minutes at a child's pace. Gate-ring streets count double. A circle drawn on a map would include streets across the highway that no child has ever walked to school on.
The tier comes from Ley 7600 compliance: what share of the weighted walk meets the legal accessibility minimum. That is what the seal turns on, and it is arguable in front of a ministry. The 0–100 School Score sits underneath as the diagnostic that says what to fix.
Below 60% of the walk surveyed, a school publishes as Sin datos suficientes: no tier, no number. A green rating computed from three observed streets is worse than no rating at all, and today that rule holds back most of the canton.
A single segment inside the gate ring below the safety floor caps a school at Crítico whatever its average says. A mean is very good at hiding one bad block, and a seal earned that way would be worth nothing.
Escuela Segura requires 80% coverage, no gate veto, a compliant walk, and at least one human field audit — not a camera pass alone. It lasts 24 months. StreetLens measures; the seal is awarded by a convening body, the way Bandera Azul works.
A proposal, not a live certification. The mark belongs to the standard, not to whoever funds it, and the awarding body is named beside it rather than merged into it. That separation is why seals like Bandera Azul carry weight: a sponsor changing does not invalidate every mark ever issued.
Ley 7600 accessibility minimum: 50/100 per segment.
Ordered by the share of the walk that meets Ley 7600. Schools without enough survey coverage sit at the bottom without a rank, because that is a verdict on us, not on them.
| # | School | Sector | Rating | Ley 7600 | Score | Surveyed | To record |
|---|---|---|---|---|---|---|---|
| 1 | Liceo de Escazú | Public | Improving | 84% | 53.3 | 100% | — |
| 2 | Benjamín Herrera Angulo | Public | At risk | 41% | 43.8 | 100% | — |
| 3 | Centro Educativo Greenland School | Private | Critical | 36% | 46 | 100% | — |
| 4 | República de Venezuela | Public | Critical | 35% | 39.4 | 100% | — |
| 5 | Centro Educativo Garabatos Instituto Preescolar | Private | Critical | 34% | 40.6 | 100% | — |
| 6 | Jardín Infantil Sorpresitas | Private | Critical | 32% | 42.1 | 100% | — |
| 7 | Colegio Nuestra Señora del Pilar | Private | Critical | 30% | 38.2 | 100% | — |
| 8 | CONED Escazú | Public | Critical | 18% | 31.6 | 100% | — |
| 9 | Corazón de Jesús | Public | Critical | 6% | 38.4 | 100% | — |
| 10 | Jardín de Niños Corazón de Jesús | Public | Critical | 5% | 37.1 | 100% | — |
| 11 | Juan XXIII | Public | Critical | 3% | 32.4 | 100% | — |
| 12 | David Marín Hidalgo | Public | Critical | 0% | 29 | 100% | — |
| 13 | El Carmen | Public | Critical | 0% | 28.8 | 100% | — |
| 14 | C.T.P. de Escazú | Public | Critical | 0% | 28.6 | 100% | — |
| — | Centro Educativo Kids World Montessori (Escazu) | Private | Awaiting data | — | — | 10% | 4098 m |
| — | Centro Educativo Arandú / Centro Educativo Arandú School | Private | Awaiting data | — | — | 6% | 2380 m |
| — | Centro Educativo True North Personalized Learning School | Private | Awaiting data | — | — | 6% | 2560 m |
| — | Blue Valley School (Colegio Valle Azul) | Private | Awaiting data | — | — | 0% | 508 m |
| — | Centro Educativo Kinder Pandas Daycare | Private | Awaiting data | — | — | 0% | 1292 m |
| — | Centro Educativo Kipos | Private | Awaiting data | — | — | 0% | 2339 m |
| — | Centro Educativo Royal International Education | Private | Awaiting data | — | — | 0% | 1162 m |
| — | Centro Educativo Saint Augustine College | Private | Awaiting data | — | — | 0% | 4605 m |
| — | Colegio Santa María (Saint Mary High School) | Private | Awaiting data | — | — | 0% | 775 m |
| — | Escuela Vista del Monte (Mount View School) | Private | Awaiting data | — | — | 0% | 4087 m |
| — | Hometwo Montessori | Private | Awaiting data | — | — | 0% | 2431 m |
| — | Integral Kallpa | Private | Awaiting data | — | — | 0% | 3420 m |
| — | Jardín Infantil Integral Borboleta e Itskatzú Educación Integral | Private | Awaiting data | — | — | 0% | 1141 m |
| — | Lighthouse International School | Private | Awaiting data | — | — | 0% | 1622 m |
| — | Washington School | Private | Awaiting data | — | — | 0% | 2717 m |
| — | West College / West Primary | Private | Awaiting data | — | — | 0% | 1898 m |
| — | Bello Horizonte | Public | Awaiting data | — | — | 0% | 1317 m |
| — | Guachipelín | Public | Awaiting data | — | — | 0% | 1811 m |
| — | I.E.G.B. Pbro. Yanuario Quesada | Public | Awaiting data | — | — | 0% | 1073 m |
Deficit × children exposed × how much of the fix sits in the cheap gate ring. Not simply the worst schools: the worst school is not automatically the best place to spend.
Streets inside a school zone that no camera has passed. This is the field backlog, and it is the honest reason so many schools read Sin datos.
The roster is the MEP's own register. Street scores come from the same capture pipeline that scores every street in the canton: nothing about being near a school changes how a street is measured. The school rating is an aggregation of those scores over the walkshed, and it is recomputed on every page load, so it moves the moment new field data lands.
Crash and incident history is not yet part of the rating. It is carried in the formula at zero weight so its absence is stated rather than assumed away; adding a collision feed is the next thing that would make these ratings stronger.