Download the .jar mods at home, put them on a USB, then drag them into the mods folder inside your portable .minecraft folder.
If you have the ability to run a .exe file (most school computers allow this unless locked down by AppLocker), the best solution is a portable launcher. Unblocked Minecraft 1.5.2
Users seeking to play Minecraft should utilize the official Minecraft Education Edition (for schools) or the official Launcher to ensure security and compliance with software licensing. Download the
In school and workplace environments, "Unblocked Minecraft 1.5.2" has become a cult classic for several reasons: Download the .jar mods at home