In a statement on the issue, the bishops said academic selection at age 11 had "outlived its usefulness".
Labour rebels, who fear greater freedom from local authorities could mean a "back-door" return to academic selection at age 11, want a national code on admissions to be made legally binding.
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"The current system of academic selection at age 11 has contributed to what is in fact a mediocre performance of the school system in Northern Ireland by international standards, " the statement added.
The administration seeks to persuade schools to advance students on academic performance and not on age.
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However, The Edmund Rice Schools Trust said it welcomed the statement of the Northern Catholic Bishops "setting out clearly their collective stance in relation to the ending of academic selection at this early age".
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Academic efforts to document Dunbar numbers in the age of social media are limited, although two Twitter studies suggest that 150 may still be a plausible estimate.
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Eldon: After a particularly undistinguished academic career, which I terminated at the age of 16, I joined an Australian bank in London in late 1964, basically as a filing clerk, and worked my way over the subsequent three years through the ranks of teller and on to a supervisory role.
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Do Sinatra fans think it strange that their hero -- who died in May at age 82 -- is now the focus of academic examination?
One of the main aims of academic recruiters is to secure the best talent pool, regardless of age, gender, disability, race, sexual orientation, religion or belief.
Academic progress could be improved further in some centres by teaching pupils in narrower age groups, as there were "limitations" in grouping the whole 11 to 16 age range together.
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Mr Willetts also distanced himself from the traditional Tory belief in academic selection, saying it was "fantasy" to say selection at the age of 11, which takes place in grammar schools, could be fair.
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There was to have been an indicator grading schools from A to E on how much academic progress pupils had made between their pupils' assessment test results at the age of 14 and their GCSEs.
Swartz, who committed suicide in January at age 26, was accused of federal computer and wire fraud crimes for downloading academic journals from J-STOR.
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They find a a positive effect on test scores, compulsary school grades, choosing an academic high-school track, high-school grades, probability of attending college, and average education by age 24.
Dr Roger White, senior lecturer in archaeology and Academic Director of the Ironbridge Institute, said he could go along with the idea that this was an Iron Age route which was then re-used by the Romans.
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