All scores bear the appropriate degree of difficulty.
The letters and figures in brackets under each bibliographical description relate to the degree of difficulty.
Degrees of Difficulty
- U1 Elementary Grade 1 - very easy - easy
- U2 Elementary Grade 2 - easy – moderately difficult
- M1 Intermediate Grade 1 - moderate
- M2 Intermediate Grade 2 - difficult
- O Advanced Grade 1 - extremely difficult