In the Student/Teacher Achievement Ratio (STAR)study,why did the researchers create two separate intervention groups?
A)The sample size was too large to only accommodate one intervention group.
B)The study could also evaluate the effectiveness of a cheaper intervention-teacher's aides.
C)The central evaluation question was whether larger class sizes improved student learning.
D)Since the cost of the project was so low,researchers evaluated multiple interventions.

Question

Quizplus · Accepted Answer

The researchers created two separate intervention groups to evaluate the effectiveness of a cheaper intervention, specifically teacher's aides. One group had a smaller class size with a teacher's aide present, while the other group had a larger class size without a teacher's aide. This allowed for comparison between the two interventions.

In the Student/Teacher Achievement Ratio (STAR)study,why Did the Researchers Create