Keep the school time the way it currently is for secondary students.
If anything they should make the school day shorter! I'm in 8th grade and I get home at 2:30 from school (it starts at 7:20am) when I come home from school I usually check my phone, get a snack, and just relax for a little. Come 3 o'clock and I get started on my homework. I am usually working on homework from 3 to 10-11 at night! ( minus time for dinner) making the school day longer would only add to that stress and it would give teachers the ability to give MORE homework because they have longer to teach their lessons! Students like me would never be able to complete all their school work, spend time with family, talk to friends, and get a good night of sleep. Keeping it the same way would still be better than adding an hour and children barely want to be there in the first place! That's my opinion anyway.