Why It Works

The Research, in Four Findings

01 · Academic Outcomes

Students Perform Better Academically

The strongest evidence comes from randomized controlled trials - the same research standard used to evaluate medical treatments.

+6.5 pts
4th-grade standardized reading scores (Texas STAAR) rose significantly in a cluster randomized controlled trial of 3,114 students after an outdoor education program.
Davis et al., 2023 - UT Austin & Stanford. NIH-funded.
10,453
Students across 41 independent studies showed consistently positive academic outcomes in science, reading, and writing - across every school level studied.
Pulido et al., 2025 - Education Sciences, MDPI.

A matched-groups trial of 440 students across 9 schools found significant gains in reading, writing, and math - and the gains kept growing during the six weeks after the program ended.

02 · Engagement & Attention

Students Focus Better Back in the Classroom

Teachers recognize this finding immediately because they've lived it.

Nearly 2×
Longer teachers could sustain instruction without redirecting students after outdoor lessons - the effect held every week of a 10-week study. Strongest for students who struggled most indoors.
Kuo, Browning & Penner, 2018 - University of Illinois. NSF-funded.
92%
Of teachers reported improved student engagement from outdoor learning - in an independent government-commissioned evaluation of 125 schools and 2,000+ educators over four years.
Natural Connections, 2016 - University of Plymouth / Natural England.

The students who benefit most are the hardest to reach indoors: a 2025 pre-registered study found the lowest-attention students showed the largest gains in time on-task outdoors - a very large effect size, even in settings with minimal greenery.

03 · Social-Emotional Development

Social-Emotional Gains Are Durable - and They Grow

Multiple meta-analyses since 2021 point in the same direction.

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Studies in a meta-analysis of 2,642 adolescents found self-efficacy gains. Every study showed a positive result - larger for students with existing mental health challenges.
Fang et al., 2021 - Perceptual and Motor Skills.
0.34 → 0.51
Social-emotional effect sizes grew after students returned home - not during the program, but after it. The gains compound rather than fade.
Hattie et al. - Review of Educational Research. 96 studies.
04 · Long-Term Retention

Students Remember What They Experienced

96%
Of participants in a retrospective study could recall a school field trip taken 1 to 20+ years earlier. Nearly all could name specific content they learned.
Falk & Dierking - Curator: The Museum Journal.

A 5-month follow-up study found students taught biology outdoors described the material with specific vocabulary and vivid detail. Students who learned the same content indoors gave vague, content-free responses. Same teacher. Same curriculum. Different setting.