This week's report by the Institute for Fiscal Studies shows those "who don't get into grammar schools do worse than they would in a comprehensive system".
In 1993, the C.D.C. abandoned its last effort to make the states participate in a comprehensive system for consistent state reporting.
The reporting system, which is financed in 17 states, tracks violent deaths, including suicides, and links data in a comprehensive system that monitors violent deaths in a way no existing program can.
Bright kids do as well or better in comprehensives as in grammar schools, and children in selective school systems who are not chosen for grammar schools do worse than they would if they were in a comprehensive system.
It is important to note that monopoly control in the Chinese political economy is not simply an economic phenomenon but also a phenomenon deeply embedded in a comprehensive system of power.
The IFS finds that children from deprived backgrounds are much less likely to attend existing grammar schools than better-off children are, even high-achieving poor pupils, while those who don't pass the 11-plus do much worse than in a comprehensive system.
