More than half of those surveyed felt pupils were under more pressure now than two years ago and over 70% felt pupils currently faced more pressure than 10 years ago.
More than 1, 000 subjects have been enrolled in the study for more than a year and over 550 subjects for more than two years.
Our economy has now created more than 4 million private sector jobs over the past two years, and more than 600, 000 in the past three months alone.
Since the financial crisis hit more than two years ago, governments all over the world have taken a variety of steps to restore economic growth and investor confidence.
The FDA has approved more than 70 drugs over the last two years.
Merseyside Police is to cut more than 250 officers over the next two years as part of cost-cutting plans.
It has not come as one big bang but in a dozen bills pushed piecemeal through Parliament over more than two years.
Attacks on bus and metro drivers (up by more than 50% over the past two years) prompted public-transport strikes in 18 big towns in November.
His wife, Alla Bout, who has been a frequently tearful figure at Mr Bout's court hearings over more than two years of detention since he was arrested, appeared outside the prison in an apparent attempt to see her husband before he left - but she was too late.
More importantly, Romney is facing withering offensive from the Obama campaign over his refusal to release more than two years of tax returns and his record at the private equity firm Bain Capital.
Each of those events has more than doubled in attendance over the past two years.
Uniform Dating has about 500, 000 registered members, and has more than doubled its subscribers over the last two years.
They have more than doubled their lending over the last two years.
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Our businesses have added more than 4 million jobs over the past two years. (Applause.) But there are still too many Americans who are out there looking for a job or trying to figure out how to pay the bills and cover the mortgage.
WHITEHOUSE: President Obama Speaks on Student Loan Interest Rates in Colorado | The White House
Last night the House of Representatives backed a bill to raise the country's borrowing limit by more than two trillion dollars, cutting spending over 10 years by around the same amount.
The Conference of Mayors, seizing the moment, released an 803-page report this week listing 11, 000 projects which, they claim, would create more than 800, 000 jobs over the next two years.
And already companies have hired more than 12, 000 and committed to train or hire 25, 000 more over the next two years.
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That would amount to less than a single death over roughly two and a half years, a period in which more than 1.4 billion passengers would have boarded scheduled flights by U.S. airlines.
It has been a tremendous honor and a privilege to do this over the past little more than two years.
Through Race to the Top, states have made more progress in reform over the past two years than in the previous decade.
It's more than two years since the overthrow of Saddam Hussein, just over one year since Washington formally ceded sovereignty to the Iraqis.
The closure of more than 900 loss making Starbucks stores over the last two years helped the company to curb further declines in its daily per store customer traffic.
More than 70, 000 people have died over the last two years in Syria, according to the UN.
Over the past two years, more than seven million Americans have lost their jobs.
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Microsoft is helping more than 10, 000 veterans get IT certified over the next two years.
WHITEHOUSE: President Obama Announces Jobs Initiative for Post 9-11 Veterans | The White House
Our businesses have added more than 5 million new jobs over the past two and a half years.
WHITEHOUSE: Remarks by the President and Vice President in Dayton, OH
This is the first time in two years that more than 50% of investors have favored equities over other asset classes.
That translates into a 9% rise in earnings per head over two years - three times more than the OBR forecast in 2010.
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Over the past two years, more than seven million Americans have lost their jobs in the deepest recession our country has known in generations.
Over the past two years, more than seven million Americans have lost their jobs, and factories and businesses across our country have been shuttered.
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