Kids aged four were exposed to porn on an iPad at Michael Gove’s flagship free school.
Parents were called in after a group of pupils saw a seedy vid in reception class at the West London Free School.
A source accused the school of failing to install internet controls, adding: “The kids were playing educational games but went on the internet to look for football.
Porn popups came up and a video of a sex act appeared.
“They started showing it to other kids before the teacher realised what was going on.”
The incident happened last November.
Former education secretary Michael Gove’s free schools policy let parents launch profit-making schools.
