Foundation milestone
Aroha/avaroha/pakad, vadi–samvadi of 6–10 foundation ragas (Yaman, Bhupali, Khamaj, Kafi, Bhairav…)
Intermediate milestone
15–25 ragas incl. vikrit-heavy ones; that system, time theory; distinguish allied ragas (Bhupali/Deskar)
Advanced milestone
35–50 ragas incl. heavyweight and compound; raga elaboration architecture; identify ragas from brief phrases