How to make wifi stay on all night?

You need to get access to the configuration of your family's wifi router. Once you figure out how to access it you need to change the parental controls setting. How that is done is dependent on which wifi router you have. If one or the other of your parents are technology savvy, odds are you won't be changing the settings as you will never figure out the passwords.

To find the router, look in your devices IP configuration settings for the default gateway address, that is usually the router. Put the IP address of the router in your browsers address bar. Then you need the username and password. If you know the brand name and model of the router you can try going to that vendors website, find the documentation for that particular model and it should guide you on how to use it and what the default username and password are.

Go to bed and get some sleep. You have school tomorrow!

Get your own home where you can make the rules.

It's best to obey your parents rules for using their internet service. Trying to circumvent the system can only cause problems between you and your parents. You didn't state your age, but if you're near age 18, then at age 18 you can move out to your own place and run your internet service all night long if that's what you desire.

Either sleep, do something else or figure out your parent's pw and such for the account of the wifi provider and snoop the settings.

Or if you have data from your phone if you have one, just figure out how to hotspot it and connect your laptop to there.

You need your sleep so you can actually get taught something in school. This is your last free ride, so make the most of it. After high school you will pay $$$$$$ for everything. Tomorrow morning when it's time to get up and get ready for school, pay attention to how you feel.

You won't do yourself any favours by breaking the rules your parents set, their house, their rules. When move out and have your own place you can do what you want.

you probably cant, just do what you need to do before 11

How old are you? 2? Stop throwing a tantrum and just deal with it. Or stop wasting time when you do have access and educate yourself on the subject. You won’t find your answer here. My teens learned to get around those kind of controls in middle school. 😏 In our house every rule is a test. If they can bypass the rule using their genius, who am I to stop them from furthering their education?

You don't. You would have to ask your parents to change the settings.