School choice and competition is the third key issue under the Tomorrow's Schools education reform. However, when parents lack information on school quality, they tend to resort to using decile as a proxy for school quality – further aggravating socioeconomic segregation in schools. To improve school choice and competition, many countries have adopted value-added models to measure both student progress and school quality. More than 30 US states and districts, the United Kingdom, Hong Kong and Australia have operationally used value-added models. Better information on school performance would release parents from relying on deciles as a proxy for school quality.

Source: Stuff February 27, 2019 15:00 UTC