In this task, you are given an article. Your task is to summarize the article in a sentence.
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Question: But the international think tank says to maximise the benefits of early years education, there need to be places for the poorest families.
The OECD says the UK has low levels of hours in pre-school education.
There are plans in England to double the amount of free childcare to 30 hours, but only for working families.
The OECD study says there are significant economic and personal benefits from investing in early years education - and it supports the move in England to extend access to pre-school places.
At present, the 15 hours of free childcare is among the lowest levels of provision of any OECD country, but it will rise to 30 hours in the autumn, for families with a working parent.
Andreas Schleicher, the OECD's education director, says that he understands the argument for focusing pre-school places on working families - so that parents can afford to go out to work.
But he says that such an approach can reduce the educational benefits of early years support, which is greatest for those from the most disadvantaged families.
The OECD study shows that by international standards the UK has high proportions of children in workless families, particularly in lone-parent families.
These may miss out if access to early years places is focused on working families.
Mr Schleicher highlighted the importance of pre-school education in giving children a strong start. This extended beyond learning, with the study highlighting links between access to early years education and reduced levels of obesity.
But the report warned that spending on this sector could be patchy and that staff could be less well-paid than in the school system.
Pre-school staff in the UK have seen their pay fall in real terms since 2010, says the OECD survey.
Looking for good quality pre-school places could also be much more difficult for parents, compared with the amount of information available about schools.
Mr Schleicher said the variety of early years places could be "very fragmented and hard to navigate".
Neil Leitch, chief executive of the Pre-school Learning Alliance, said: "We have long argued that, given current limited resources, the government should focus its spending on where it is needed most.
"As such, we remain at a loss as to why there has been no attempt to rethink the current eligibility criteria for the 30-hour offer."
A Department for Education spokeswoman said: "We are investing more than ever before into childcare - Â£6bn per year by 2020 - and doubling our existing offer of free childcare for all three and four year olds to 30 hours for working parents.
"We are also supporting the most disadvantaged families with 15 free hours per week for two year olds, our pupil premium which is worth over Â£300 a year per child and our new Disability Access Fund, providing Â£615 per eligible child."

Answer: Young people who went through pre-school education are much more likely to do well in international Pisa tests when they are teenagers, says the OECD.


Question: She died in hospital after being admitted on Friday, her order said.
Dr Pfau witnessed leprosy in Pakistan for the first time in 1960 and returned to set up clinics across the country.
Her efforts meant that in 1996 the disease was declared to have been brought under control.
Prime Minister Shahid Khaqan Abbasi said Dr Pfau "may have been born in Germany, but her heart was always in Pakistan".
"Dr Ruth came to Pakistan here at the dawn of a young nation, looking to make lives better for those afflicted by disease, and in doing so, found herself a home,"  he said, praising her courage and loyalty
Harald Meyer-Porzky from the Ruth Pfau Foundation in WÃ¼rzburg said Dr Pfau had "given hundreds of thousands of people a life of dignity".
Dr Pfau was born in Leipzig in 1929 and saw her home destroyed by bombing during World War Two.
She studied medicine and was later sent to southern India by her order, the Daughters of the Heart of Mary, but a visa issue meant she became stuck in Karachi, where she first became aware of leprosy.
"Well if it doesn't hit you the first time, I don't think it will ever hit you," she told the BBC in 2010.
"Actually the first patient who really made me decide was a young Pathan. He crawled on hands and feet into this dispensary, acting as if this was quite normal, as if someone has to crawl there through that slime and dirt on hands and feet, like a dog."
Dr Pfau rescued disfigured and suffering children who had been confined to caves and cattle pens for years by their parents, who were terrified that they were contagious.
She trained Pakistani doctors and attracted foreign donations, founding Pakistan's National Leprosy Control Programme and the Marie Adelaide Leprosy Centre, which has a presence in every Pakistani province.
Dr Pfau also won praise for her efforts in helping the victims of devastating floods in south-western Pakistan in 2010.
She received numerous honours for her work, including the Hilal-e-Imtiaz - Pakistan's second highest civilian award - in 1979, the Hilal-e-Pakistan in 1989 and the German Staufer Medal in 2015.
She wrote four books in German about her work in Pakistan, including To Light A Candle, which has been translated into English.
Her last rites will be performed on 19 August at St Patrick's Church in Karachi and she will then be buried at the Gora Qabristan Christian cemetery in the city.

Answer: Ruth Pfau, a German doctor and nun who dedicated her life to eradicating leprosy in Pakistan and has been described as the country's Mother Teresa, has died in Karachi aged 87.


Question: Lambert Smith Hampton (LSH) advised the Regeneration Investment Fund for Wales about the sale of 15 publicly-owned sites for £21m in one deal in 2012.
The Wales Audit Office claimed the land could have been sold for £36m.
Managers from LSH told AMs they had got value for money, but if they had their time again they would have tried to prove they got best value.
There was also criticism from the consultants Deloitte, in an internal report commissioned by the Welsh government, which described LSH as a "passive marketing agent" that provided little advice or analysis.
Giving evidence to the public accounts committee on Tuesday, Jeremy Green from LSH said: "There was an imperative to sell the assets in a timely manner.
"We were not under any impression that this was a fire sale and that we had to sell under any cost.
"Our duty was to obtain value and we believe we did that.
"The only thing we would do again would be to strive to prove that we had achieved best value, so that we did not have to sit here and answer these questions now."
In response to questions about the lack of open marketing of the land, another LSH manager, Lee Mogridge, said the sites had a range of technical problems over ownership which meant that they could not have been advertised more openly.
He also defended the sale of all of the sites in one deal, rather than being sold separately, claiming that it took the risk out of the deal for the board.
But Mr Mogridge could not fully answer repeated questions from the committee chair Darren Millar that not all of the offers for the land were reported to the board by LSH.
The most valuable site for sale covered 120 acres (50 hectares) of farmland on the edge of Cardiff, which could now be earmarked for housing.
The land was sold for £15,000 an acre (£37,500 per hectare) but one valuation has now estimated that large chunks of that land could be worth up to £2m an acre (£5m per hectare).
It was confirmed for the first time that the taxpayer will receive 30 percent of any increase in value, although BBC Wales understands that those terms expire in 18 months time.

Answer:
Property advisors at the centre of criticism about the sale of public land in Wales have defended their actions.


