A school compared the grades of students with disabilities while they were in separate classrooms and a year later when the state required integrating these students into mainstream classrooms .What type of research is this?
A)Cross-sectional comparison
B)Before-after study
C)Interrupted time series study
D)Difference in differences study

Question

Quizplus · Accepted Answer

This is a before-after study because it compares the grades of students with disabilities before and after a specific intervention, which in this case is the integration into mainstream classrooms.

A School Compared the Grades of Students with Disabilities While