Since the mid-1990s college tuition costs have risen quickly while the rate of increase in the value of education has slowed considerably. Cecilia Rouse and Lisa Barrow explore the reasons and ask if college remains a good investment.

Because a significant portion of U.S. students lacks critical mathematic skills, schools across the country are investing heavily in computerized curriculums as a way to enhance education output, even though there is surprisingly little evidence that they actually improve student achievement. In...