2020 No https://doi.org/10.1016/j.buildenv.2020.106749 Wargocki, Pawel Review Modeling Students Elementary (K-5) Middle/Jr High (6-8) High School (9-12) Ventilation rates Carbon Dioxide (CO2) Absenteeism Test Performance Cognative function Children learning Cognative performancce Elementary schools Carbon dioxide (CO2) Literature review of 20 studies (15,000 students) modeled how CO₂ levels and ventilation rates affect schoolwork speed, accuracy, exam scores, and attendance. Results predict significant performance gains from improved ventilation, supporting policy to enhance classroom air standards for learning and health.