They were described "As centres of excellence for training, Training Schools act as experts in adult learning and the transfer of skills, and provide a venue for high quality professional development."[4]
Initially, there was a requirement that a training school had to have High Performing Specialist Schools status. This requirement was removed in February 2010 to enable special schools to become training schools.[6]
Training School designation is no longer in use, it was superseded in England by Specialist Teaching Schools,[7] many working with other schools and strategic partners to form a Teaching School Alliance. The first cohort of 100 Teaching Schools across 97 Teaching School Alliances were designated for the beginning of the 2011–2012 academic year.[8] Teaching Schools are themselves losing designation from 31 August 2021, with their role passing to regional Teaching School Hubs, of which there will be 87 across England.[9]