“…In the past forecasting literature, numerous authors have identified this issue as highly problematic (Brigham, Gustashaw, & Brigham, 2004;Kauffman, 1994;Kavale & Mostert, 2003;McGrath, Johns, & Mathur, 2004;Mostert & Crockett, 2000;Zigmond, 2001). The unanimous conclusion was that, more often than not, special education professionals employ methodology that lacks a sound scientific underfooting.…”