Grading for Pianostreet Music

[piano_nurse]

I was wondering about how certain pieces are graded on this site and why they receive the grade they do... I ask this because there are are some that I would disagree with... For example... I can play Reverie, by Debussy, which is graded at an 8 on this websites sheet music section. However, there is NO WAY I could play  other pieces that receive the same grading, such as Chopin's Berceuse. Can someone tell me how the pieces are graded or why they receive the grade that they do? Thanks!

[j_menz]

there are are some that I would disagree with...

And that, no doubt, would be true of any grading system. And the higher the grade, the truer it gets.

[rachmaninoff_forever]

I don't like this grading system.  

Apparently The moonlight sonata is on the same level as Prokofiev's second piano concerto.

[j_menz]

I don't like this grading system.  

Apparently The moonlight sonata is on the same level as Prokofiev's second piano concerto.

You mean the Prok 3, not 2, and both are 8+ - hardly a statement that they are the "same".