Bob Garton, head teacher at a school in Barking said teachers are "under pressure because of the number of pupils and the mobility in the school".
Speaking to Daybreak's Nick Dixon he said: "We're coping well but it is a difficult situation, we have to stagger our playtimes in the morning, and also at lunch time the children have to come in at different times so they can fit in the hall and the playgrounds."
He said the only way the Government can solve the problem of overcrowding in schools is to give more money to the local authorities to build new school buildings.
More top news
Matalan said: "It is with great sadness we can confirm...both victims worked at our Cardiff branch."
Police believe a tree currently growing near the farmhouse where the 21-month-old toddler was last seen in 1991 was not there at the time.
The 21-year-old was using a portable toilet in Sydney when he was bitten near to the same area as in a previous incident in April.