There is growing evidence that school starting age impacts children's likelihood of receiving special education services, but less is known about variations in this effect. Using a regression discontinuity design, I found that the youngest students in a kindergarten cohort are 40% more likely (p < 0.001) to be placed in special education than…

The problem of disproportionality in special education is complex and requires an investigation of multiple factors related to racial, ethnic, linguistic, and socioeconomic backgrounds, school context, and family characteristics. Researchers have debated whether language minority (LM) students are under or overrepresented in special education, but…

We examined to what extent subgroups of students identified with learning disabilities (LDs; N = 630) in the Early Childhood Longitudinal Study, Kindergarten Class of 1998 to 1999 (ECLS-K): 1998 national longitudinal study displayed heterogeneity in longitudinal profiles of reading and mathematics achievement from first to eighth grades.…

Nearly 14% of students in the United States receive special education services in public schools (NCES, 2017). Special education programs serve students with a wide range of developmental differences and vary considerably across schools and districts (National Research Council, 1997). Likelihood of identification for special education services…

Students with specific learning disabilities (SLDs) represent a large proportion of those receiving special education services in U.S. schools, but the relationship between student-level variables and SLD identification is still not well understood. The purpose of this study was to examine the extent to which data collected as part of a…

Despite decades of research on racial disproportionality in special education, the underrepresentation of Asian Americans in services tends to be overlooked in policy and practice. Underrepresentation, however, raises the possibility of similar concerns about misidentification, bias, and racial inequality within schools as overrepresentation. Yet,…

A discriminant analysis of characteristics of students with behavioral disorders in three progressively more intensive placements indicated that age at time of diagnosis was the strongest discriminating variable contributing to placement outcomes. Younger, brighter students tended to be mainstreamed, and older students with more externalizing…

Concurrent and prospective correlations among reading, spelling, phonemic awareness, verbal memory, rapid serial naming, and IQ were examined in 19 students with reading disabilities and 36 controls at grades two and eight. The strongest predictors of reading disabilities were cognitive-linguistic measures, particularly rapid naming. (Author/CR)

A study examined the records of 99 non-adjudicated students with severe emotional and/or behavior disorders (EBD), 49 of whom were placed in regular schools and 50 who were in segregated schools. Results indicated that students served in regular schools were identified as severely behaviorally disordered at an earlier age. (CR)

A study examined literature on mathematics learning disabilities (LD) and identified specific behaviors of students with mathematics LD. Data are presented from observations of 391 special educators on 1,724 students with LD, 870 with math weaknesses. Difficulty with multi-step problems was the single most important behavior for predicting math…

Ninety-one Finnish preschoolers were assessed prior to receiving formal reading instruction. Verbal and nonverbal measures were used as predictors for the time of instruction required to accurately decode pseudowords. Phonological awareness differentiated precocious decoders from early decoders and ordinary decoders. Late decoders differed from…

This book is a compendium of papers presented March 18-20, 1996, at the eighteenth annual Spectrum of Developmental Disabilities course. Research findings are presented that address identification, diagnosis, management, and prognosis of specific reading disability. Individual chapters include: (1) "Dyslexia: The Evolution of a Concept" (John…

A study of 4,455 school districts found African-American students were about 2.4 times more likely to be identified as mildly mentally retarded and about 1.5 times more likely to be identified as seriously emotionally disturbed than their non-African-American peers. Economic and demographic variables were significant predictors of disproportionate…

Composite reading performance data from 223 pairs of identical twins and 169 same-gender fraternal twins in which at least one member was classified with reading disability were subjected to multiple regression analysis. Results indicated that the genetic etiology of reading disability differs as a linear function of IQ. (Contains extensive…

This introductory article discusses a study that investigated how at-risk students are defined in each of the Canadian provinces and Northern Territories and similarities in the definitions in the policy-making and policy implementation arenas. Different types of students that may be at-risk are described. (Contains references.) (CR)