1. Time in grade. The IBJJF requires at least 12 months at white belt. Your professor may want more. The clock starts the day you stepped on the mats — not the day you started caring about belts.
2. Volume. Number of sessions, not number of months. You can be at white belt for 5 years with 50 sessions and still not be ready. Volume reflects exposure to live training, problem-solving, and getting tapped.
3. Consistency. Regular attendance over time. Showing up 4x/week for 6 months then disappearing for 4 months is worse than 3x/week for 12 months straight.