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Then don't download it. It's not like your school needs you to play Novetus to get an education.
Honestly, if you really have to ask a community to back-up a file that could easily be backdoored, then you might as well ask a van if it has candy in it. 

The launcher is open source, you can see *exactly* what it's doing if you know how to read Visual Basic. The file has been scanned in VirusTotal, and has been scanned in thousands of antiviruses, which can give you a good idea of how many false positives it's going to get. There's a discord server, if you ever have issues you can always go there.

If you like the idea but want to avoid at least a few risks, get a Windows 10 virtual machine or something and download the file through it. Sandboxing tools exist if you have a computer from the 1700s for whatever reason. XP Mode for Windows 7! This is all stuff you can do if you are really paranoid if something will suddenly delete your whole computer.

I'm not trying to be rude, just trying to help it make sense. You won't be arrested for not downloading Novetus, the police won't be knocking at your door, your school won't make fun of you. It's a choice you can make.
I've tried whatever I can to make it make sense. I've used this project for a while, and it's done nothing.
If you think I'm lying, don't download anything off the internet. It's as easy as that.