Effect of Heat on Outdoor Recess in Arizona Elementary Schools, July–September 2023
Bibliographic record
Abstract
School recess is an important setting to support children's health; however, inclement weather, including extreme heat, affects the provision of recess. We conducted a cross-sectional study to determine the number of days that recess in elementary schools was disrupted because of heat in the first quarter of the 2023-2024 school year. We obtained data by conducting a survey among teachers representing 61 elementary schools in Maricopa County, Arizona. Daily high temperatures during this time ranged from 90°F (32.2°C) to 119°F (48.3°C). Almost all schools (93%) modified traditional outdoor recess because of heat. Across schools, recess disruption averaged 3.5 weeks. Almost half of the schools (49%) reported 4 to 6 weeks of disrupted recess, comprising 44% to 67% of the first quarter of the school year or up to 16% of the entire school year. Although state policies mandating daily school recess exist, they generally do not address the provision of recess during inclement weather, including heat. Given the health benefits of recess for children, minimizing heat exposure in schoolyards and supporting indoor recess during times of extreme heat should be prioritized.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.004 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".