The type of design the school administrator is using is known an non-equivalent control group design.
The school administrator said he wants to compare records of a school that has no lockers with that of a school that has lockers. Hence, the answer to this question is non equivalent control group.
A non equivalent control group is a treatment group and a control group which are measured and compared after getting data from both groups at the beginning and at the end of a research program.
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Mayan civilization and Egyptian civilization
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C. Autism spectrum disorder
Also known as ASD. Please rate me well