Profession skill levels fall into eleven stages of increasing ability to learn and execute recipes: Apprentice, Journeyman, Expert, Artisan, Master (), Grand Master (), Illustrious (), Zen Master (), Draenor Master (), Legion Master (), and Kul Tiran / Zandalari Master ().
Change in Battle for Azeroth
- Non-expansion goes up to 300.
- Outland, Northrend, Cataclysm, and Pandaria progression bars each go up to 75.
- Draenor and Broken Isles go up to 100.
- Kul Tiras and Zandalar go up to 150.
- Not counting any racial or other bonuses, at a Illustrious skill level of 75  you can learn the Zen Master stage and gain up to a maximum of 75  points.
- This proficiency level is the last to have a 75 point range. All subsequent proficiencies have a 100 or 150 point range.
- Starting with Battle for Azeroth pre-patch, this proficiency range will have its own progress bar of 75 points.