Students in AP Environmental Science recently completed an assessment of the quality of Reeves Creek (near Thacher) by sampling for the macroinvertebrates that inhabit the substrate. Based upon the relative dominance of the species, students were then able to calculate a water quality index. The field work involves using the kick-seine technique (a lot like what it sounds!), handling of the macroinvertebrates (Stonefly larvae, Caddisfly larvae, Dobson Fly larvae and the common Giant Water Bug!), identification and then calculations. This fieldwork also has the benefit of getting the students out of the typical science classroom and into the greatest science classroom we have – our surrounding environs!