Do more natural settings improve students' learning? We collected surveys immediately following 283 U.S.-based environmental education (EE) field trip programs for youth and used land cover data to examine the relationship between levels of naturalness, defined as the percentage of natural land cover of the EE field trip site, and student learning outcomes. We also examined whether differences in levels of naturalness between students' day-to-day environment and the field trip setting were related to student learning outcomes. When controlling for grade and race, both levels of naturalness and novel levels of naturalness accounted for approximately 4% of the variance in student outcomes suggesting that other field trip characteristics are more influential.