All Middle Schoolers participated in Explo where the girls studied various aspects of the environment. Each grade level made a unique connection to the theme based on what they had learned in their science classes this year: the sixth grade students explored the sources, effects, and solutions of climate change and pollution; the seventh grade students investigated aspects of environmental quality and the effects on various forms of life; and the eighth grade students, in their final year of Explo, delved into relationships between chemicals and waves and their effects on the environment. This six-week process was completed during science class in groups. During this time, they went on a field trip to collect data, participated in a service project, and spent time learning at Don Edwards National Wildlife Refuge in mixed-grade groups. Back at school, they picked a topic of interest based upon what was observed, researched that topic, designed an experiment, ran multiple trials, analyzed results, and at the Celebration of Explo presented their results to the Castilleja community. The purpose of Explo is to enable the students to have a collaborative learning opportunity as well as serve as an assessment of their growth within their scientific process skills. Teachers and parents alike marveled at the girls’ skills in scientific thinking!