Longitudinal Trajectories of Reading and Mathematics Achievement for Students With Learning Disabilities

Area of Science:

• Educational Psychology
• Developmental Psychology
• Special Education

Background:

• Students identified with learning disabilities (LDs) often exhibit diverse academic trajectories.
• Understanding this heterogeneity is crucial for effective educational interventions.

Purpose of the Study:

• To investigate the extent of heterogeneity in longitudinal reading and mathematics achievement profiles among students with LDs.
• To identify distinct subgroups of students with LDs based on their achievement trajectories.

Main Methods:

• Utilized data from the Early Childhood Longitudinal Study, Kindergarten Class of 1998 to 1999 (ECLS-K).
• Employed multivariate growth mixture modeling to analyze combined reading and mathematics achievement from first to eighth grades for 630 students with LDs.

Main Results:

• Identified four distinct classes of longitudinal achievement trajectories for students with LDs.
• The largest class (54.3%) demonstrated below-average achievement with a slight decline.
• A significant subgroup (22.3%) showed average achievement, often associated with higher SES and earlier LD identification.

Conclusions:

• Recognizing heterogeneity in achievement trajectories is vital for understanding the educational needs of students with LDs.
• Subgroup identification offers a promising approach to personalize support and improve outcomes for students with learning disabilities.