Planning consultancy Nathaniel Lichfield & Partners has lodged three applications covering a total of 286 houses with Knowsley Council on behalf of Bellway Homes North West.
Each of the sites had been identified by the council as surplus to its urban green space and educational requirements, leading to their release for residential development.
The Scotchbarn Lane site will take most of the new housing, with 133 units built on the site of the former St Edmund Arrowsmith Catholic High School, which closed in 2009 following a merger with Knowsley Higher Side school in a new facility on Cumber Lane.
The site on Rockford Avenue formerly housed Cherryfield Primary School, which closed in 2010 following the opening of a new school on Broad Lane. It will now house 91 homes.
Bellway’s Whiston Lane site, where 62 houses will be built, is former urban green space.
The housing comprises a mix of two- to four-bedroom homes.
Decisions on the three applications are expected in March.