“…Previous CSA prevention cluster RCTs have included random assignment by school district (Kolko, Moser, & Hughes, 1989), by school (Daigneault, HĂ©bert, McDuff, & Frappier, 2012; Dake, Price, & Murnan, 2003; Hazzard et al, 1991; HĂ©bert et al, 2001), and by classroom (Blumberg, Chadwick, Fogarty, Speth, & Chadwick, 1991; Crowley, 1989; Dawson, 1987; Grendel, 1991; Oldfield, Hays, & Megel, 1996; Snyder, 1986; Wolfe, MacPherson, Blount, & Wolfe, 1986). Maximizing the effectiveness of personal safety training delivered in elementary school is critical given that risk for CSA is highest for children ages 7 to 13 (Finkelhor, 1994).…”