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BRAINTREE - Did you like doing math in school? Many people didn't. But a non-profit in Massachusetts is increasing the number of students of color and low-income students in advanced level math ...

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 ...