Stop all schools detaining children after school in the winter months

I want the safety of children at the forefront of all what schools do. My child has traveled home at 5 pm in the dark on her own due detention. Detention does nothing to children. It is the teenage version of the naughty step and poses massive risks when they are sent home with no regard for their safety or if they made it home. All schools should not be allowed to hold children after 4pm in the winter months with no plan on how they’re going to get home safety and parental consent every time.