“…Cost-effectiveness studies have been carried out on teacher selection (Levin, 1970), educational television and radio (Jamison, Klees, & Wells, 1978), choice of a mathematics curriculum (Quinn, VanMondfrans, & Worthen, 1984), computer-assisted instruction (Hawley, Fletcher, & Piele, 1986;Levin, Glass, & Meister, 1984Levin, Leitner, & Meister, 1986), and increasing the school day, reducing class size, and crossage tutoring (Levin, Glass, & Meister, 1984.…”