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A researcher introduces a new mathematics program in one school district and uses a neighboring district as a no-treatment control group. before the program begins, the students in both districts are given a standardized mathematics test. after the program is in place for six months, the students are tested again and the researcher compares the before and after scores for the two groups. this research study is classified as

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W0lf93
This research design is a quasi-experiment. It is not a correlational study because there is a "control" group, but because the students were not randomly assigned to either the control or experimental group, the design is not an experiment. There might be things one could to to limit the threats to validity, such as repeated measures, multiple groups, etc.

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