Assumption in Educational Policy Argument

A new study finds that students who frequently engage in group study sessions score higher on average in their examinations than those who study alone. Based on this, the principal of a local high school argues that implementing mandatory group study sessions will improve overall student performance.

However, the principal's conclusion is based on an assumption that there is only a positive relationship between group study and exam scores. If this assumption is incorrect, the proposed policy may not yield the expected results.