To answer your question about the Graded Piano Repertoire Grading Table: It is based on research into stages of development obtained from piano teaching methods, examination requirements and years of piano teaching experience. Having said that, grading of pieces is very subjective and differences of opinion will often occur. Unfortunately, compositions frequently do not fit neatly within a category and a subjective decision must be made on the closest fit and the degree of learning difficulty based on teaching experience. Even though the decision regarding level of difficulty is always a subjective one, any one system has at least the value of consistency. Level of difficulty is an essential factor in choosing pedagogical repertoire and the ability to search by this criterion is a
significant benefit of the relational database design of the Graded Piano Repertoire Database.
Graded Piano Repertoire is hosted in Australia where there is a very strong emphasis on piano examinations, with Australian Music Examinations Board (AMEB), St. Cecilia School of Music, Associated Board of the Royal Schools of Music (ABRSM), and Australian and New Zealand Cultural Arts Limited (ANZCA) examinations all being readily available. All examination boards give a quantitative grading and a qualitative written report on the examination performance, the latter varying significantly from examiner to examiner and between examination bodies. Exams can be attempted at any grade if desired with the exception of the diplomas (Associate, Licentiate) which have certain prerequisites. Some grade examinations have a music theory requirement.
Graded Piano Repertoire was developed as a resource for teachers, students and other piano music lovers who wish to have more freedom in the selection of pedagogical and performance repertoire, without being confined by examination repertoire or other graded publications. It is continually growing in both volume of repertoire and additional features. A twelve month subscription costs less than one piano lesson or an AMEB Examination Syllabus, so hopefully it will find a market as a useful and affordable resource for pianists everywhere.
Hope this answers your questions satisfactorily