I have heard many times that giving school homework to children and adolescents is negative for them because they would get stressed. I have also heard that children spend too many hours at school and when they finish school they only need to rest and get bored; otherwise it is negative for them (Ceapa llama a los padres a secundar una ‘huelga’ de deberes el mes de noviembre (20minutos.es))
On the other hand, I found a study that pointed out the benefits of extending students’ learning time outside of the formal school. (Morlà-Morlà, T., Ríos, O., Mara, L. C., & Garcia, C. (2020). Impact of the extension of learning time on the learning space of the platform for people affected by mortgages Tarragona. Learning, Culture and Social Interaction, 24, 100369. https://www.sciencedirect.com/science/article/abs/pii/S2210656119300248)
Do you have any evidence about this?