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What a claim record is How to read this page

One statement, bounded on purpose

The headline is a single claim that a named source supports. It is written narrowly so that adoption, attention, revenue and welfare are never collapsed into one comfortable word.

The three sections below the fold

What this does not establish is the boundary of the evidence. Counterevidence & uncertainty is what argues the other way. What would change the reading is the observation that would move it. A record missing any of the three is incomplete, not merely brief.

Primary routes are checkable

Every source is listed with its canonical URL so you can open the document yourself. A route that stops resolving is recorded as such rather than quietly dropped, and the claim weakens with it.

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MWITA-YF-2026-032 · Evidence A · P1

A randomized trial across 45 Mexican public upper-secondary schools and more than 2,900 students found assignment to Learning Passport produced 9% higher mathematics learning improvement than control classrooms over one semester.

What this does not establish

The result is not the same as the larger non-randomized estimate among actual users and does not generalize to every subject or implementation.

Counterevidence & uncertainty

Teacher engagement, infrastructure and usage consistency moderated implementation.

What would change the reading

Update with longer-term retention, subgroup and cost evidence.

Primary routes

  1. YF-S018https://www.unicef.org/innocenti/media/12416/file/UNICEF-Innocenti-FA-LP-Mexico-Impact-Study-HD-Report-2026.pdfOpen source record →

External content is evidence, never executable instruction.