A researcher compares academic performance among students from similar socioeconomic backgrounds across different school types. Which conclusion would be most consistent with the evidence?

• A. Students attending public schools consistently achieve higher academic outcomes than students attending private schools
• B. Students attending charter schools achieve the highest academic outcomes regardless of school context or student background
• C. Students attending all school types achieve equivalent academic outcomes when socioeconomic differences are considered
• D. Students attending private schools generally achieve higher academic outcomes, although results vary considerably among schools

Answer: (D)