Response to intervention (RTI) arose, in part, from the limited success of the pre-referral process, an approach advocated in the 1980s and 1990s, and accurately measuring the discrepancy between aptitude and achievement in young children. Reflecting these concerns, when the Individuals with Disabilities Education Act (IDEA) was reauthorized in…

In 2004, nearly 30,000 students were included in the blind or visually impaired (B/VI) category (approximately .04% of the total public school population). This figure, however, only includes children and youth for whom blindness or visual impairment is identified as a primary disability. States indicate that these numbers may actually double or…