Educational practices whose effectiveness has been determined through rigorous scientific investigations include:

Question

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All of the given options have been found to be effective through rigorous scientific investigations. Reduced class sizes in grades K to 3 have been found to improve academic outcomes, particularly for low-income and minority students. One-on-one tutoring for at-risk readers in grades 1 to 3 has been shown to increase reading skills and comprehension. Instruction in phonics for early readers has been found to improve decoding and reading comprehension. Thus, all three options are supported by research as effective educational practices.

Educational Practices Whose Effectiveness Has Been Determined Through Rigorous Scientific