The data in minneapolis.csv were provided in Long (2012). They constitute a sample of students taken from a much larger dataset collected by the Minneapolis Public School District. The data were collected to comply with the No Child Left Behind Act of 2001 and began during the 2004-05 school year. The variables included in the data are:
student_id: De-identified student ID number
reading_score: Reading achievement score.
grade: Grade-level.
special_ed: Is the student recieving special education services?
attendance: Proportion of attendance based on the number of school days the student attended school during the four year of the study.
The reading achievement scores are based on the reading section of th Northwest Achievement Levels Test (NALT), a multiple-choice, adaptive assessment of students’ academic achievement. The NALT raw scores were converted to vertically equated scaled scores using an IRT model. Higher scale scores indicate more reading achievement.