Three primary schools in Surrey are to get £9m for new buildings and refurbishment to cope with increasing pupil numbers.
The largest chunk of the county council funding will go to Sandcross Primary in Reigate, which is to get £5m for 11 new classrooms at Sandcross Lane.
About £1.5m will come from the sale of the Alexander Road infants' site.
St John's Church of England School in Dorking will get £2.2m, while £1.8m will be spent at Kingfield in Woking.
"I'm really pleased to be able to give communities in Reigate, Dorking and Woking a clear undertaking to transform their local schools," said Councillor Tim Hall.
The county council said there was a near 20% rise in the birth rate in Surrey from 2002 to 2008.
As well as new classrooms to accommodate the infants' school, Sandcross Primary will get a second hall, new computer and library areas and an outdoor play area for nursery and reception children.
Work is expected to be completed by September 2012.
Kingfield will be extended and upgraded to switch from an infants' school to a primary.
Modernisation at St John's will include refurbishing the computer room, installing a new all-weather football pitch and creating new classrooms and a play area for pupils aged three to five.