A spot-on editorial and cover story in this week's Economist about the importance of training teachers and how the current ed school system in the US isn't getting the job done:

FORGET smart uniforms and small classes. The secret to stellar grades and thriving students is teachers. One American study found that in a single year's teaching the top 10% of teachers impart three times as much learning to their pupils as the worst 10% do. Another suggests that, if black pupils were taught by the best quarter of teachers, the gap between their achievement and that of white pupils would disappear.

But efforts to ensure that every teacher can teach are hobbled by the tenacious myth that good teachers are born, not made. Classroom heroes like Robin Williams in "Dead Poets Society" or Michelle Pfeiffer in "Dangerous Minds" are endowed with exceptional, innate inspirational powers. Government policies, which often start from the same assumption, seek to raise teaching standards by attracting high-flying graduates to join the profession and prodding bad teachers to leave. Teachers' unions, meanwhile, insist that if only their members were set free from central diktat, excellence would follow.

The premise that teaching ability is something you either have or don't is mistaken. A new breed of teacher-trainers is founding a rigorous science of pedagogy. The aim is to make ordinary teachers great, just as sports coaches help athletes of all abilities to improve their personal best (see article). Done right, this will revolutionise schools and change lives.

… There can be few crafts more necessary. Many factors shape a child's success, but in schools nothing matters as much as the quality of teaching. In a study updated last year, John Hattie of the University of Melbourne crunched the results of more than 65,000 research papers on the effects of hundreds of interventions on the learning of 250m pupils. He found that aspects of schools that parents care about a lot, such as class sizes, uniforms and streaming by ability, make little or no difference to whether children learn (see chart). What matters is "teacher expertise". All of the 20 most powerful ways to improve school-time learning identified by the study depended on what a teacher did in the classroom.

A well-deserved shout-out for Relay:

TO THE 11- and 12-year-olds in his maths class, Jimmy Cavanagh seems like a born teacher. He is warm but firm. His voice is strong. Correct answers make him smile. And yet it is not his pep that explains why his pupils at North Star Academy in Newark, New Jersey, can expect to go to university, despite 80% of their families needing help to pay for school meals.

Mr Cavanagh is the product of a new way of training teachers. Rather than spending their time musing on the meaning of education, he and his peers have been drilled in the craft of the classroom. Their dozens of honed techniques cover everything from discipline to making sure all children are thinking hard. Not a second is wasted. North Star teachers may seem naturals. They are anything but.

Like many of his North Star colleagues are or have been, Mr Cavanagh is enrolled at the Relay Graduate School of Education. Along with similar institutions around the world, Relay is applying lessons from cognitive science, medical education and sports training to the business of supplying better teachers. Like doctors on the wards of teaching hospitals, its students often train at excellent institutions, learning from experienced high-calibre peers. Their technique is calibrated, practised, coached and relentlessly assessed like that of a top-flight athlete. Jamey Verrilli, who runs Relay's Newark branch (there are seven others), says the approach shows teaching for what it is: not an innate gift, nor a refuge for those who, as the old saw has it, "can't do", but "an incredibly intricate, complex and beautiful craft"