2021 No https://pubmed.ncbi.nlm.nih.gov/33048573/ Holmes, E North America Observational Epidemiology Study Students Elementary (K-5) Test Performance School gardens Mississippi delta Garden knowledge Self-perception While no effect on standardized test scores could be determined, students increased garden knowledge and reported feeling positive about their future, teamwork, and leadership ability. These results were supported by observations of student joy, confidence, leadership, and teamwork.