Sefton Council's controlling Labour Group has given the green light to fund the refurbishment of a Crosby secondary school.
Crosby High was in line to benefit from a major refurbishment on the Chesterfield High site under the previous-Labour Government's Building Schools for the Future programme.
But the scheme was axed by the Tory-Lib Dem Government.
Now Sefton's controlling Labour Group has pledged to provide funding to pay for a much-needed refurbishment of the facilities at the school's De Villiers Avenue site.
Sefton Council leader, Labour's Cllr Peter Dowd said Sefton was stepping in after the Tory-Lib Dem Government had failed the pupils of Crosby High.
Peter said: "Crosby High School's building is not in the best condition. Pupil numbers have been increasing over recent years and the school itself has been doing very well for the young people it serves.
"But the facilities at the school have been in need of modernisation.
"Under the previous Labour Government's Building Schools for the Future programme, plans were drawn up to make major improvements at the Chesterfield High site.
"But the Tory-Lib Dem Government axed the BSF programme and brought to a halt our ambitions for the school.
"The Labour Group on Sefton Council immediately decided to give its backing to the school and we have drawn up plans to provide funding to help the school modernise and refurbish some of their existing facilities."
Sefton Council's Labour Cabinet members agreed to provide a fund to pay for the scheme which was halted by the Tories and Lib Dems.
Cllr Dowd said: "My Labour colleagues and I on the Cabinet agreed to provide a fund of £400,000 for improvements at the school which will result in classroom accommodation being extended and a programme of modernisation.
"The works will be phased over a couple of years with the first phase providing the additional classroom space required.
"This is about Sefton Council and Sefton Labour investing in our young people in the borough.
"While the Conservatives and Liberal Democrats are happy to pull the plug on a scheme which improved our schools, the Sefton Labour Group are determined to get the best for the people of the borough and the best for our young."
Manor Ward Labour Councillors Steve McGinnity, Diane Roberts and John Kelly welcomed Cabinet's decision.
Cllr McGinnity said: "Crosby High is an excellent school which provides an excellent service to young people from throughout Sefton. But the school building and the facilities themselves are in need of modernisation.
"We were all obviously very disappointed when the Tory-Lib Dem Government pulled the plug on Building Schools for the Future.
"But Sefton Cabinet's decision to invest in the school is good news for Crosby High, good news for Crosby and good news for the borough as a whole."