In most school systems, over 50% of 15-year-olds students attend schools that compete with another school to attract students from the same residential area. Across countries and economies, performance is unrelated to whether or not schools have to compete for students. When choosing a school...

Regardless of the type of school attended (public or private, advantaged or disadvantaged), 15-year-old students spent more time in mathematics lessons in 2012 than in 2003. The average amount of time spent in mathematics classes varies by more than a factor of two across countries and...