A school's policy of giving detentions to top set pupils who score below 90% on maths homework has been described as "overtly cruel" by a parent.
Joseph's son is in Year 7 at Stewards Academy in Harlow, Essex, and scored 13 out of 16 for his maths homework, which is 81%.
"I thought [the detention] was unjustified: I've worked with children and I find trying to foster aptitude through negative reinforcement doesn't really work," he said.
Head teacher Stephen Drew – who appeared on the TV series Educating Essex – said the school offered homework support and "the work is set at a level that reflects exactly what they've been taught in the previous week".