Finding · as stated by the study, recorded by Coridum · status verified-machine

Finding F-1500

“During school hours, 83% of classrooms had high average CO2 concentrations.”

Almendares et al. Indoor Air Quality Conditions and Respiratory Virus Detections in Elementary Schools—Kansas City, Missouri, February–March 2023 (2025). Indoor Air. Page 1. CKB 1398

Structure

Factor
Carbon dioxide (CO₂)
Setting
classroom
Study design
study of indoor air quality and respiratory virus transmission in two schools: carbon dioxide, air change rates and bioaerosol sampling in classrooms and common spaces, with nasal swabs from students and staff (class 4)
Effect
share-above 83
Caveat
the threshold behind 'high' is the study's own

A Finding records what one published document states, verbatim and with its page. It is not a conclusion of Coridum; see the Claims that build on it.