During the final half of 2010, I asked more than 1,500 teachers around the globe two questions: what are your happiest memories from learning at school, and what are your least happy experiences?
When I do the "reveal" of what I think their answers will be, every workshop has a "but how did he know?" reaction. It's more akin to an audience's response to illusionist Derren Brown than to the beginning of a day of professional development.
For teachers' answers are always the same. At the top is "making stuff", then school trips, "feeling I'm making a contribution" and "following my own ideas". Their least happy experiences are "a frustration at not understanding things", "not having any help on hand" and "being bored", mostly by "dull presentations". "Not seeing why we had to do certain tasks" appeared in every continent.
Most of these educators agreed that the positive experiences they loved about school were too few, and were outnumbered by the "important but dull" parts of today's schooling: delivering content, preparing for and doing exams.
Pupil-led learning creates entrepreneurial, confident individuals. Professor Sugata Mitra's work shows that children in Indian slums are able to teach themselves and each other when provided with a computer kiosk on a street corner and access to the internet.
Within six weeks of starting my teaching career in the UK in 2002, I was fortunate to take up a spot on a small delegation to New Brunswick, Canada. There, since the 1970s, pupils have been achieving stellar results through experiential, project-based learning in which they have the lion's share of control over what is learnt, with whom and using what resources. And they have done it in a language that is not their mother tongue.
Yet the thought of allowing 30 assorted children at a time free rein upsets even the most innovative of educators. Far better to set a project theme for them; at least we know we will cover what we need to cover.
On the other side of the world in New Zealand, at Auckland's Albany Senior High School, deputy head Mark Osborne gives his pupils free rein every Wednesday through impact projects. "It can take weeks of discussion, reading and searching, but once you have struck their passion, their eyes light up and you can't stop them," he says.
Pupils have built a VW "Herbie" car, a rocket and a content delivery platform for the school's plasma screen system, inadvertently undercutting the commercial outfit pitching to the local university by NZ$280,000 (pound;137,682).
As US academic Professor Roger Schank puts it: "There is really only one way to learn how to do something, and that is to do it."
Over in California stands High Tech High, set up in San Diego in 2000 as a charter school. It was created with support from local businesses as an environment that would help fill the skills and attitudes gaps faced by the area's technology industries. Principal Larry Rosenstock believes that until teachers identify their own passions they cannot hope to facilitate the experience for pupils.
Further up the coast in San Francisco, Gever Tulley is developing his Tinkering School, an educational experiment with big ambitions currently acting as a one-week summer school. Pupils learn by building bridges from dumped plastic bags, roller coasters from old crates or villages on stilts designed to provide secret niches for reading. The ideas come wholly from the seven-year-old collaborators and staff work tirelessly to spot and reinforce the learning opportunities inherent in the build. Elements of physics, mathematics, design, art, music and language are all wrapped in the vital skills of the 21st century for which there is, thankfully, no subject: ingenuity, collaboration, experimentation, failure and storytelling.
Harnessing entirely pupil-led, project-based learning in this way isn't easy. But all of this frames learning in more meaningful contexts than the pseudocontexts of your average school textbook or contrived lesson plan, which might cover an area of the curriculum but leave the pupil none the wiser as to how it applies in the real world.
There is a line that haunted me last year: while pupil-led, project-based learning is noble and clearly more engaging than what we do now, there is no time for it in the current system. The implication is that it leads to poorer attainment than the status quo. But attainment at High Tech High, in terms of college admissions, is the same as or better than private schools in the same area.
The assumption that pupil-led, project-based learning offers less success in exams is a false but persistent one. John Hunter was the anatomist who defined modern medicine because, frankly, no one else had. He had a saying that has since become the mantra of the modern surgeon: "Don't think. Try the experiment."
Innovations in education that engage young people and have the most profound impact will not occur because someone told teachers what to do and how they should do it. They won't come by tinkering with the curriculum or seeking the perfect balance of assessment. The most important changes in learning this decade will come around because someone, a teacher, maybe you, thought that things weren't what they could be and that something new was worth a try. They will get together with colleagues and make time to talk through the possible and seemingly impossible. And then they will go and try it out.
Don't think (too hard). Try.
Ewan McIntosh is a teacher, education adviser, speaker and investor. http:edu.blogs.com.