How to hack my school laptop?

Hi, I have a school tablet with the alternative Minecraft download on it. I want to add mods but usually when I try to download something that ''will make changes to the computer'', it asks for an admin and password. I have tried using my school id and password, but it ''requires higher elevation.'' I want to download WinRar and MC Forge. Thank for replies.

Read more: How to hack my school laptop?