Schools Secretary Ed Balls has defended the government's record on teenage pregnancies, as new data is likely to show a key target will be missed.
Mr Balls said he expected statistics to show that the rate of teenage pregnancies is now the lowest it has been for well over a decade.
But he conceded it would be "really hard" to achieve the pledged target of a 50% decline on 1998 figures by 2010.
The statistics will be published by the Office of National Statistics.
Speaking on BBC Breakfast, the Schools Secretary also defended legislation passed on Tuesday night that will force faith schools to teach sex education.
An amendment to the Children, Schools and Families Bill will mean that religious educators will be allowed to teach personal, social, health and economic (PSHE) lessons "in a way that reflects the school's religious character".
The amendment was passed by a majority of 345 in the Commons.
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