Evidence increasingly demonstrates nature engagement benefits. However, little evidence shows nature engagement provides children with a reflective perception of biodiversity, nor whether perception influences children's wellbeing and resilience. We explored the impact of weekly nature engagement in schoolgrounds on 509 eight-to-eleven-year-olds' biodiversity perception, wellbeing, and resilience. At the start and end of the academic year, wellbeing and resilience questionnaires were completed, and biodiversity perception was assessed by children drawing what they thought was in their schoolgrounds. Children initially perceived few organisms within easily visible taxa, and perceived more vertebrates compared to invertebrate species. After, children were more aware of taxa, resulting in a more reflective biodiversity perception. Children with initially low scores in wellbeing and resilience increased in these measures, and a positive association was found between increased invertebrates and vertebrates perception and improved resilience. Nature engagement within curriculum could reduce children's extinction of experience and improve wellbeing and resilience.