“…The PACER has an extensive literature describing the reliability and validity of the test in adults and children (Léger & Lambert, 1982; Léger, Mercier, Gadoury, & Lambert, 1988). Correlations between the PACER and laboratory-based measures of aerobic fitness are moderate to strong, ranging from r = 0.65 to 0.83 (Mahar, Guerieri, Hanna, Kemble, 2011; Varness, Carrel, Eickoff, & Allen, 2009). The PACER was administered in small groups, typically 8–12 students, with at least 1 research staff member per 3 children, and another staff member overseeing the test.…”