Services like GeForce NOW sometimes feature Minecraft or allow browser-based desktop streaming.

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Most iconic Minecraft mods were built and perfected for 1.12.2.

Be mindful of your institution's acceptable use policy. Avoid playing during active class times or critical work hours. Best Mods to Try on Minecraft 1.12

Whether you are looking to kill time during a study break or want to run massive modpacks that require this specific version, playing Minecraft unblocked is entirely possible. Why Version 1.12 is So Popular

If your school computers allow you to run .exe or .jar files from external storage, you can set up a portable version of the game at home. Download your preferred Minecraft launcher on your home PC. Install Minecraft version 1.12.2.

Since the heavy lifting is done in the cloud, even basic school Chromebooks can run the game at high framerates. Safety Tips for Playing Unblocked Games