In cooperation with the National Science Foundation GK-12 Program, students at New Horizon High School, Pocatello, Idaho, collaborated with research scientists at Idaho State University to investigate the biological health of a nearby, unprotected creek. Students gained valuable field experience collecting stream samples with a variety of field equipment and sampling techniques. In addition to their field experiences, students engaged in a variety of laboratory techniques to analyze their stream data. Throughout the stream, students measured bacterial (e.g., E. coli) contamination, organic and inorganic total suspended solids (TSS), macroinvertebrate composition, periphyton standing crop, and nutrient (i.e., NO₃, P0₄) concentrations, which were then compared to a nearby, protected stream. Students observed low levels of bacterial contamination, high levels of inorganic TSS, an adequate periphyton standing crop, and a disproportionately low macroinvertebrate biotic index. Given the concentration of nutrients and availability of primary producers in their stream, students expected to see higher numbers of sensitive macroinvertebrates. Students hypothesized that the low number of these insects is a result of high sediment levels, presumably from the high concentration of unregulated motorized trails. As previous research indicates, dirt roads can increase erosion and may impair our stream and watershed’s health.