macOS
macOS Mojave
The current version, 10.14.6, focuses on stability and reliability, but the real draw for experienced users lies in the tools underneath.
Mac operating systems for school and home
Keeping a school computer room running often means having a few macOS versions on hand — for older iMacs that cannot update, for testing software before a term starts, or for setting up a dedicated offline machine. This category gathers the macOS releases I have checked on our club iMac M1. Each one installs from a bootable USB the way our technician showed me.
More about this part of the shelf
You will find macOS Catalina and macOS Mojave for older setups, plus macOS High Sierra for machines still on mechanical hard drives. I add newer builds when they prove stable enough for classroom use. Pick the version that matches your hardware, and the torrent file lands on your current Mac ready for a USB stick.