Amid the many signs of underperformance in American education, the growth and geographic spread of Advanced Placement courses in high schools is a widely admired success story. For several decades, AP ...
How many fifth-graders in the U.S. took the AP Calculus AB exam last year? Radu Rosu of Chapel Hill wanted to find the answer. He knew of one child who did - his 10-year-old son, Paul Rosu, who earned ...
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