What is it and what problem were you trying to solve when you developed it?

Well, it came from some work by neuroscientists in the States, a guy called Douglas Fields and his team.

And that was read by an educationist called Paul Kelly here in the UK, an anglicized Californian, who was the headmaster of an experimental high school in the north of England.

And Douglas was looking at what it is, how the brain creates new neural connections, what triggers that process, the chemical process.

And Paul read the paper of the work that he'd done and applied that understanding to a classroom setting.

And he took a group of students who were not studying GCSE biology, and he gave them an hour-long lesson at the beginning of the year.

And at the end of the academic year, using that method, at the end of the academic year, he grabbed them without warning and got them to sit the exam paper alongside their peers who'd been studying full-time.

Tell us more about what's the evidence base behind this and what convinced you that it was working?