Forty-five schools will be built in the next term, should the Andrews government be re-elected, with planning for the remaining 55 to be underway in that time.

The schools building pledge would cost $850 million.

Dozens of the new schools will be built in suburban growth areas, including seven in Casey, seven in Wyndham, six in Hume and five in Melton.

Twenty-one of the schools have already been fully-funded and will open in coming years.

The bulk of the money would be spent on the construction of a further 24 schools, some of which have already had land set aside for them or are being planned.

The package would also fund the planning of another 55 schools, which would open within eight years.

Education Minister James Merlino said the new schools would help meet the demands of population growth.

“Victorian school enrolments are growing and we need to plan ahead," Mr Merlino said.

"All the Liberal Party do is talk about moving people to regional Victoria - but we know the best way to handle population growth is to build new schools and invest in the infrastructure people need,” he said.

The package is expected to create about 2500 construction jobs and 1,700 teaching and support staff rolls over the next four years, according to the government.

A new kindergarten will also be built at or next to every new primary school in the state, Labor said, putting an end to "the dreaded double drop-off" for many parents.

Labor has promised to spend almost $5 billion in the next 10 years on rolling out three-year old kinder.

Schools in Melbourne's inner suburbs and growth corridors are already feeling the squeeze. Some are staggering lunch times or rolling out three-storey portables to accommodate an influx of students.

State, independent and Catholic schools will have to accommodate a record 1 million students by 2020.

Research from the Grattan Institute found that 220 new state, independent and Catholic schools needed to be built in Victoria over the next decade to cope with an explosion in student numbers.

The Grattan Institute's school education program director Peter Goss said Labor's school building proposal was in line with his projections.

"This is the first time I have seen a Victorian political party propose a school building program that genuinely matches the scale of the population growth ahead," he said.

He said the locations for the new schools made sense, as did buying land when it was cheaper.

"It is more likely that the schools will be there when this current generation of young people need it."

Australian Principals Federation president Julie Podbury said the new schools would help meet demand.

She said ideally, secondary schools should have no more than 1200 students and primary schools should be between 600 to 800 students.

"Otherwise you tend to lose track of who your community is," she said.

Ms Podbury said having a kindergarten at every new state primary school made a lot of sense.

"It helps with the transition to prep,” she said. “It eases congestion and eases parent anxieties getting from A to B."

Australian Education Union Victorian branch president Meredith Peace also welcomed the election pledge, and said population growth was putting intense pressure on schools in growth areas.

"If we don’t have the new schools being built quickly enough it can put pressure on schools in terms of accommodating those kids, having enough ground space for the kids to play on and having class sizes increasing," she said.

"The population is growing so rapidly."

Parents Victoria executive officer Gail McHardy said a one-stop shop for primary school and early childhood services would be of great benefit to families.

While new schools are always a good thing, Ms McHardy said many existing schools desperately needed upgrades.

"Older school communities are still waiting for upgrades," she said. "This is a big issue for parents."

Premier Daniel Andrews said the promise to build 100 schools was “a profound investment in making sure that every child gets every chance in this the education state”.

“These are our priorities and we put them before the Victorian community asking for their support on November 24, so that we can get these schools built,” Mr Andrews said.