A leaked map of proposed schools in Melbourne's outer north shows more than a dozen new schools are needed to cope with massive demand expected for enrolments.

The Education Department confirmed it has identified 14 school sites in the Epping North and Mernda/Doreen growth areas, but it currently owns only half of them.

The City of Whittlesea, which covers these growth corridors, said new schools are urgently needed within three years with its population forecast to grow by 61 per cent to almost 300,000 people by 2030. Population growth is already putting pressure on existing schools in the area.

The map, which carries Education Department insignia, shows earmarked sites for primary and secondary schools and a proposed specialist school.