When should an twelve year old boy be in bed?

There is no definitive answer to this question, as it can vary depending on a number of factors such as the child's individual sleep needs, their level of activity and their family schedule. However, as a general guide, most twelve-year-old boys should be in bed by around 9pm. This will ensure they get the recommended 10-11 hours of sleep that they need each night to promote healthy growth and development.