New series. Cameras follow events at three secondary schools - Marlwood, The Castle, and Mangotsfield, all part of a large Multi-Academy Trust in South Gloucestershire. It's a new academic year and budget cuts start to bite at The Castle, the largest and most successful school in the Trust. Sixteen-year-old Chloe is struggling to deal with the pressure of her forthcoming GCSEs, and walks out of one of her mock exams after suffering an anxiety attack. There's also a profile of 12-year-old Chelsea, one of the brightest students in her year group.