Grade inflation is endemic at American colleges and universities. The most common grade at Harvard, for example, is a straight A, according to its student newspaper. The distortion has the potential to make high marks mean less, give bad information to degree programs and employers on student performance, and distort how people choose their majors. Those concerns prompted three professors at Wellesley...

Grade inflation is endemic at American colleges and universities. The most common grade at Harvard, for example, is a straight A, according to its student newspaper. The distortion has the potential to make high marks mean less, give bad information to degree programs and employers on student performance, and distort how people choose their majors. Those concerns prompted three professors at Wellesley...