Plans to create a 630 place primary school in Sandal have been submitted to the council.
The plans to add two-storey and single storey extensions to Sandal Endowed Junior School, will enable it to take 270 more pupils.
The plans have been in the pipeline since the school merged with Castle Grove Infant School back in 2009.
The schools merged as part of Wakefield Council’s plans to tackle the problem of thousands of unfilled primary school places across the district, which were costing £5m per year.
A report submitted with the planning application earlier this month, said the extension would create three upper foundation classrooms and six infant classrooms. Each classroom would have its own outdoor learning area.
There would also be a new entrance, office, headteacher’s room and a new play area.
The two schools have shared a headteacher since they merged. Castle Grove Infant School has around 175 pupils on roll and Sandal Endowed around 240.