Schools employing wastewater-based epidemiology techniques have shown the ability to detect COVID-19 in wastewater samples well in advance of an outbreak showing up in the traditional testing of individual students. With portable samplers taking aliquots daily at critical locations, hot spots are quickly identified and costly total shutdowns are prevented. The two Teledyne ISCO samplers most popular on campuses today are the portable Avalanche with powered refrigeration great for preserving genetic material, and the Glacier with its 12-volt deep-cycle battery delivering 48+ hours of refrigerated composite sampling at unpowered sites. With the right technology we can keep our schools open while keeping students safe.