For instance, in England in the early 1980s only about 10% of the year group achieved three A-levels.
The education ministry in Paris dictates how many hours a week are devoted to each subject for each year group.
But because it involves tracking each year group of pupils, it has taken five years to produce the first results.
"Streaming children according to their relative age within each year group may also be helpful, as may allowing children to repeat a year, " they wrote.
This particular problem will only be exacerbated in small rural schools where classes are made up from more than one year group making sequential teaching difficult.
They reported that the 2-12 month group had signficantly lower serum thiol levels, and the 1-6 year group was significantly higher levels, with a p-value of 0.001.
Proposals must be in by Wednesday and the new schools, part of a council drive to create 150 new school places per year group, will open in September.
This research, funded by the Nuffield Foundation, is intended as a step towards finding a way of tackling the disadvantages of being the youngest in a year group.
It is a well established fact in educational research that children who are younger in their year group at school tend on average to do significantly worse in terms of educational attainment.
Ms Barton said she was particularly pleased with last year's results because of when they first arrived in the school, only 55% that year group had been predicted to achieve good GCSE grades.
His experience leads him to believe that raising the performance of one year group, as the school has done this year, is the key to a continuing rise in standards in years to come.
Diabetes occurred at a rate of 7.6% a year in the placebo group and 2.1% a year in the Actos group.
The 18-24 year old group used 534 MB, up 147% from a year ago, while the 25-34 year olds used 578 MB, up 118%.
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The age group with the highest consultation rate was the 25-34 year age group at 147 consultations per 100, 000.
The Internet addiction rate is highest for the 13-17 year old group, at 73%, and bottoms out at 39% for 55-64 year olds.
The next year the group met Bob Dylan, beginning one of rock's great partnerships.
So this year the group submitted a detailed plan with drawings, only to be rejected again.
To celebrate their 50th anniversary last year the group did a few tour dates.
Last year the group launched Active Plus to helps veterans with post-traumatic stress return to work.
This major corporate rebranding became necessary in light of the expanding reach of the 65-year old group.
In just the last year Game Group, Peacocks, Past Times and Clinton Cards have all fallen into administration.
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Later that same year a group of 2, 400 drivers from across the nation filed another class action making similar claims.
Last year a group of state insurance regulators hired PIMCO to replace rating agencies in analysing mortgage-backed securities held by firms they oversee.
Last year his group and the Hong Kong government announced that they were jointly developing the multi-billion dollar CyberPort, a high-tech incubation project.
Earlier this year WRU group chief executive Roger Lewis outlined a new 'Wales Rugby Selection Strategy' warning Welsh internationals leaving Wales of a potential clash.
Last year the group faced a slowdown in external trade and rising costs that have checked gains for port operators in China and Hong Kong.
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Last year the group picked The Social Network as best picture.
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It is the third successive year the group has reported an increase in revenues since it bought the Spode and the Royal Worcester brands in 2009.
Early last year another group of U.S. businesses, known as the U.S. Climate Action Partnership, also rallied around the creation of a market-based mechanism for lowering greenhouse gas emissions.
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