“…In response to the first research question, we documented the movement of students between general and special education as well as reclassification from one disability category to another (e.g., Carlson & Parshall, 1996;Thurlow et al, 2016;Walker et al, 1988;Schulte and Stevens (2015), approximately 10% (n = 2,830) to 12% (n = 3,409) of the sample cohort received special education services in any one grade from 3 through 8, with 11% (n = 3,032) receiving services in Grade 3, about 17% (n = 4,957) receiving special education services in at least 1 year, and approximately 5% (n = 1,404) receiving special education services in every year in Grades 3 to 8. Furthermore, a very small proportion of students remained in the same disability category across Grades 3 to 8, ranging from 0.07% for ED to about 2% for SLD (see column "Always" of Table 1).…”