Legend:

Z-Beginners

MP– Pre-Intermediate
MP A1 – completed 1 BD course (min. 15 lessons)
MP A2 – completed 2 courses (min. 30 lessons)
MP A3 – completed 3 courses (min. 45 lessons)
Completed 1 year
MP B1 – completed 3-4 courses (min. 60 lessons)
MP B2 – completed 4-5 courses (min. 75 lessons)
MP B3 – completed 5-6 courses (min. 90 lessons)
Completed 2 years

SP – Intermediate

SP A1 – completed 6-7 courses
SP A2 – completed 7-8 courses
SP A3 – completed 8-9 courses
Completed 3 years
SP B1 – completed 9-10 courses
SP B2 – completed 10-11 courses
SP B3 – completed 11-12 courses
Completed 4 years

P – Advanced
P A1 – completed 12-13 courses
P A2 – completed 13-14 courses
P A3 – completed 14-15 courses
Completed 5 years