The CLASS PAL website, resources, and training workshop have been co-produced by the research team and practising primary school teachers.

We thank the following teachers for their collaboration: Alan Eathorne (Meadowdale Primary School), Sarah Hiscocks and Sally Bolton (Little Bowden Primary School), Georgina Connors and Sally Gambles (Great Bowden Academy), Louise Headley and Amy North (Redlands Community Primary School), and Stacey Tedds (Husbands Bosworth C of E Primary School).

Initial development work included a review of published academic studies evaluating classroom physical activity interventions, and focus groups with teachers and pupils to identify challenges to implementing classroom physical activity. This was followed by a four month pilot phase, where teachers from six primary schools trialed movement breaks and physically active lessons, recording their delivery using a lesson capture tool ( and attending a series of co-production meetings/days.