The five-year-old girl, named locally as Lilly-May, is understood to have collapsed and was in a "life threatening condition" when treated at Willow Bank Infant School by an air ambulance crew.

She was taken by ambulance to the Royal Berkshire Hospital where she died.

Thames Valley Police said the death was "currently unexplained" but "not believed to be suspicious".

Tributes, cards, flowers and toys have been left by a tree at the school gates, with the girl's mother writing:

"My beautiful, happy little girl, Lilly-May.

"Mummy loves and misses you so much. Why did you leave us?

"You dance with the angels now."

"Love you more Mummy."

The Duffield Road school is open as usual today with support being provided to pupils and staff by Wokingham Borough Council.

A statement on the school's website reads: "We are deeply saddened to report that one of our children passed away.

"Our thoughts are very much with the family and friends at this tragic time.

"A special team from the local authority will be in school providing additional support.

"Should you feel you would like to use this, we have set space aside in the group room accessed via the library.

"We will provide an update as soon as we can."

Judith Ramsden, director of children’s services at the council, said: " This is an extremely sad day and our thoughts and prayers are very much with family and friends of the little girl, all of the pupils, their families, and staff at the school.

“We are supporting the whole school community in every way we can, and our specialist team will be back with them on Monday.

“We sincerely ask that you give the school, and its families, both the space and the time they need to grieve and heal during the coming months.”

Please email your tributes to jash@berksmedia.co.uk