Around 6 hours on school days, and probably 10 on weekdays. It evens out roughly. It takes me at least half an hour to go to sleep unless I'm ridiculously tired, and I often wake up an hour or two before I'm supposed to wake up and can't go to sleep. I usually stall to do my homework until 9:00 to 10:00 and then do it until I'm finished, and then fall asleep around 12:00, to wake up around 6:00. I'm horrible at getting up on time, often I don't have time to eat and rush to do everything else.