Recently my child just graduated from High school and wanted to know when is the best time to take classes is it either the day or night? My child wants to get good grades. Any suggestion and why?
Are night classes good?
I recommend that my DS continue getting up and taking morning classes. That way he can begin his home work right after class while it is fresh. They have been getting up all these years. 
Some students prefer to sleep in. There should also be the option to take some afternoon classes.
The only thing about night classes is that it may get late before the work is done and he might forget something if he waits until the next morning to begin. Also, if he lives on campus, it might be a problem if he is on really different schedule from his roommate. Working commuters often take night classes.
It is really going to depend in what is offered. When I was in school, there was always a full selection of morning classes and science and computer labs would be available at night.
I have always had some classes in the morning, and it is a good option: both for getting work done after, and the fact that you could be done with classes by lunch! I would suggest, if it is up to him, nothing before 9. I had 8:20 classes freshman year, and more often than not I could not stay awake or even get up for it. Engineering, ROTC, and Band contributed to very late nights, and if he thinks he will be very busy and need to stay up during the week then stay away from the earliest classes, but late morning/early afternoon are the times I would suggest.
I always preferred to have morning classes back-to-back and no gaps.
One semester, I had classes from 8-11:50am on MWF. I loved it, especially on Fridays, because I was done at Noon every MWF. I had a class at 9:30 and then a class at 11:00 on Tuesdays/Thursdays, and I was done at 12:15 on those days. Sometimes, it was a pain getting up early, but I preferred getting done at noon.
Last semester, on MWF, I had a class from 11:15-12:05 and then another class from 2:30-3:20. That gap between those two classes was the worst because I would just sit on a couch in the student union building and do nothing between the two classes. I always wanted to skip that 2:30 class, especially on Fridays. Some people like gaps, but they just dragged the day out and made me tired.
IMO I like having classes beginning in the late morning. I have trouble getting myself to wake up and do hw, so if I have classes starting at 10/11 that will force me to not sleep all day.
I’m NOT a morning person - yet always took morning classes because they tended to be smaller. At my university, professors said morning classes also attracted more serious students so it made for better discussion. Getting classes out of the way early in the day gave me afternoons to study/hang out/work, and made the day longer.
That said, I know very successful, accomplished students who hated morning classes and avoided them like the plague. They had no trouble being productive or getting their work done despite the “shorter” day.
Like so many things, it’s all about discipline and time management, no matter when you take your classes.
I think that it is ideal to take classes starting at 9:30 and then ending by about 2:30. Classes should be distributed over the days in the week (like it is not good to have 5 classes on Tue and Thurs). This leaves afternoons/evenings available for sports, clubs, fun, studying, work.
However, sometimes you don’t have control over when classes are.
It also depends on factors like whether the student will be living conveniently near campus or has a significant commute to get there (those on or near campus would not find it a problem to have class times scattered throughout the day requiring multiple trips to campus). Paid work hours and scheduled extracurricular activities (e.g. intramural sports league) may also affect what the desirable class times are.
Many people tend to feel tired or sleepy in the early afternoon. If this is the case for the student, it is best to avoid scheduling classes during that time.
I tried to group mine in the morning over two days or three days,it didn’t want them more than four. I thought it made sense to have blocks of time for stuck laundry, chores, doctor visits. If I had one a class that met weekly, I scheduled around it. Remember that scheduling classes often have a time factor.
So. Depending on the size of the campus, factor in the time to change buildings. If the campus was large, I selected classes by location so I could move readily between buildings. Avoid needing to move fast to distant buildings, up or downhills, across buildings, and lots of foot traffic. You might find lots of people moving quickly in both directions with by cycles threading there way through. I had lots of students who entered class late which distracted classmates and these students need time to catch their breath and get settled. I your materials packed so that you can grab what you need with one hand and not looking. For example, put class materials ordered from front to back and stow what you just used at the very back.
Were is that library? Get to know where the building is located, how it is organized Dewey or Library of Congress, location of computers and restrooms. Where quiet study carrels are located. What are your triggers? For example, I move to avoid gum chewing or leave, but talking is fine. Libraries have rules they care about.
I studied in one building after class and left early for the next class. Don’t think you will go back to your room because you may get busy doing something or fall asleep. Just like you pick roads and motels when you travel, plot your course on a campus map. Periodically, you will find shortcuts, traffic flow, etc.
Also factor is hazards such as snow and ice, places where rain water pools, broken sidewalks, metal stairs that can be dry and slippery. Little nut things that act like ball bearings on a sidewalk. If it is snowy often during winter, parking spaces get progressively smaller. Personally, I preferred getting to class on my own steam and walked aka climbed over snow banks or parked in a more distant lot where parking was more a available. Even absolutely flat campuses get hilly during winter. If I had a nice car, it would be stowed safely.
I have survived more than 7 campuses.
Most important thing for many classes is the instructor as they set the difficulty level and determine grades.
If I can be done with class by noon I’m happy.
Interesting and Thank You