OPEN MINDS Weekly News Wire Intellectual & Developmental Disability Services Between 1995 and 2004, the number of students between the ages of six and 21 receiving special education and related service under the Individuals With Disabilities Education Act (IDEA) increased from 5.1 million in 1995 to 6.1 million in 2004. The largest increase occurred for students in middle and high schools. However, schools and states differences in determining IDEA-qualifying conditions has resulted in inconsistencies in services provided to students within a state and between different states. For example . . .