Parents are finding out whether they have got their preferred primary school place, as for the first time a National Offer Day allocates places across England on the same day.
Primary places have been put under increasing pressure, with many schools adding extra classes to keep pace with a fast-rising birth rate.
Between 2012 and 2013, primary pupil numbers grew by almost 100,000.
Councils are calling for more powers over the opening of new schools.
This year sees the first co-ordinated allocation of primary school places across England, with emails and letters being sent out with details of where children will be starting school in September.
In Manchester, where there has been population growth, some 87.5% were offered their first preference school. A total of 4.5% - some 303 children were offered places at schools which they had not chosen.