Does the index of segregation matter? The composition of secondary schools in England since 1996
Does the index of segregation matter? The composition of secondary schools in England since 1996
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分离指数重要吗？
DOI：
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发表时间：
2009
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通讯作者：
S. Gorard
中科院分区：
文献类型：
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作者：
S. Gorard
本文提出了一个新的分析学校之间的隔离在贫困学生方面，在英格兰所有中学从1996年至2005年。这表明，从1996年到2001年，类似的学生集中在特定学校的情况明显增加，但随后稳定在一个水平上，仍然低于1989年开始有官方记录时的水平。该分析使用了四种隔离估计数，使用了免费校餐的接受和资格数据，编制了差异指数和被称为Gorard隔离指数的数据。所有四个估计数都给出了相同的实质性结果，使用免费校餐的任何一个衡量标准得出的相异指数和戈拉德隔离指数的结果是没有区别的。因此，这两个指数衡量的是同一件事。然而，隔离的Gorard指数再次被证明是更宽容的精确的措施正在使用，因此更强的组成不变的相异度指数。这对过去关于如何衡量学校之间的隔离的辩论以及教育当局如何估计未来的隔离具有重要意义。
This paper presents a new analysis of segregation between schools in terms of pupils living in poverty, for all secondary schools in England from 1996 to 2005. This shows that the clustering of similar pupils in specific schools increased noticeably from 1996 to 2001, but then settled at a level still below that of 1989 when official records began. The analysis uses four estimates of segregation using figures for take-up of, and eligibility for, free school meals compiled to create both the dissimilarity index and what has been termed the Gorard index of segregation. All four estimates give the same substantive results and the findings for the dissimilarity index and the Gorard index of segregation using either measure of free school meals are indistinguishable. The two indices are, therefore, measuring the same thing. However, the Gorard index of segregation is again shown to be more tolerant of the precise measure being used and so more strongly composition invariant than the dissimilarity index. This has important implications both for the past debate on how to measure segregation between schools and for how education authorities go about estimating segregation in the future.