Hi Gia Ancona,
I'm afraid no one can say what is the best or better Operating System. It depends what you (or students) expect from OS, or what application you will use.
We have some limitations also, i.e. cost, system requirements (resource required by OS), etc.
If you provide more information, many will provide many answers.
Regards,
Ashidacchi -- https://ssl01.rocketnet.jp/hokusosha.com/default.html