A group of schools, nurseries and colleges have issued parents with a list of screen time recommendations for children aged between 0 and 18 years old. The letter, which was sent out to the parents of 11,000 children this week, said “young people need a largely screen-free childhood in which to grow up, with screens only used for controlled periods of time and for certain types of activities”.It also encouraged parents and teachers to be “role models” by limiting their  own use of smartphones and social media in front of children.As part of the new guidelines, the coalition of schools in Southwark will also review the use of screens in classrooms, and said homework will only be set electronically “where there is a clear educational benefit”.Consulting with child psychologists, as well as educational leaders, teaching staff came up with the following guidelines for how much screen time children of different ages should be having each day...Here’s what they suggest as the maximum amount of screen time per day: &l