What conclusion should be reached about the effectiveness of Head Start programs?
A. Head Start programs show few short-term gains for students, with benefits not recognizable until high school
B. Despite decades of research, no demonstrable gains have been demonstrated for Head Start programs.
C. Across both short- and long-term periods, the evidence of benefits is mixed.
D. Head Start programs show clear short-term benefits, and these become stronger through the middle school years.
Answer: C
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