Underachievement, even if there are no signs of what others consider to be trouble.
"This is the Holy Grail of breaking barriers of underachievement and disaffection, " he said.
The Lancet paper is one of a series of three looking at underachievement in the developing world.
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Sometimes when the ADD is diagnosed and treated, the trouble, whatever it is, or the underachievement remit.
And the big challenge is to develop education systems that no longer accept widespread underachievement among poorer pupils.
In fact these lofty goals can often have a deleterious effect, leading to discouragement, unethical behavior or even underachievement.
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There is not enough good or outstanding teaching to overcome students' past underachievement.
The lecturers' union says that this map of achievement and underachievement underlines the importance of improving access to education.
Ofsted was highly critical of the Sir John Talbot School in Whitchurch, highlighting widespread underachievement in English and Maths GCSEs.
He will also order all local education authorities in England and Wales to provide progress reports outlining what they are doing to tackle boys' underachievement.
That would suggest the lack of a winter break doesn't just explain England's underachievement but also affects foreign players plying their trade in the Premier League.
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This accident of birth can have far-reaching economic significance, says the IFS, as underachievement in qualifications at school will be likely to reduce employment opportunities in adulthood.
The bigger picture of the Excellence in Cities' work in schools, says the minister, is to find ways to reverse generations of educational underachievement in the inner-cities.
The number of such schools needs to grow rapidly in order to cut the long tail of underachievement which blights the education service in the disadvantaged areas of England.
In terms of academic results, inspectors found underachievement at GCSE level in this sector, with evidence that pupils are on courses for which they have "little realistic chance of success".
The school has to an extent narrowed the gender gap which now sees girls outperforming boys at GCSE level by having a boys' underachievement group and some single sex lessons.
The gender stereotypes perpetuated by books such as Men Are from Mars, Women Are from Venus damage our ability to tackle serious social issues, including educational underachievement, bullying, divorce, and violence.
The unionist forum will also discuss other social, economic and political matters, including deprivation and educational underachievement in the unionist community and the low level of unionist voter registration and turnout.
Any manager would have been frustrated by the ensuing financial restrictions, but at times he has used the dispute between George Gillett and Tom Hicks to camouflage underachievement on the pitch.
Worse, Britain's long tail of educational underachievement has persisted.
While in the United Kingdom there has been much concern over the "gender gap" and the underachievement of boys, the US figures suggest a similar pattern of results has already emerged there.
Studies have shown that such disconnectedness leads not only to anxiety, depression, and underachievement but also to substance abuse, disruptive behavior, and a host of medical problems in both children and adults.
Moreover the tail of underachievement is long and cannot be explained away by immigration: around a fifth of British students cannot read properly and a similar number are flummoxed by simple sums.
The head of the NIAO, Comptroller and Auditor General Kieran Donnelly, said: It is vital that our education system does all it can to address underachievement in order to improve the life chances of our young people and to ensure that our economy is well equipped to compete in an increasingly global marketplace.
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