I've been playing piano for a few years as something I take seriously and sing in the school choir just for fun. My piano teacher and choir director semi-frequently compliment me on how quickly I can grasp music theory, but I have no real way of getting an accurate grasp of my progress. Recently, though, I found out about the ABRSM grades 1-8 and many people tend to use this to evaluate their progress. For example, they say if you want to major in music, knowing at least grade six piano music would help a lot.
Out of curiosity I tried googling songs of various difficulties, but different pieces of the same grade seemed to have varied quite a bit, at least with the mid level grades.
To help clear some confusion, could anyone please provide some popular examples of piano music (with images) so I can know what I can expect to see from each grade level, which will hopefully allow me to evaluate my progress a bit better?
Not sure if this helps, but here is the most advanced piano book I am currently working on: http://www.alfred.com/Products/Alfreds-Basic-Adult-Piano-Course-Lesson-Book-3--00-34928.aspx
The website provides no information regarding difficulty, so if anyone is familiar with this book and knows what the highest grade level I can expect is, that would be helpful. I am about 20-30% done with the book and have completed the previous two books in the series (it is book 3 out of 3 btw).
Apologies in advance if this comes off as duplicate, off topic, too broad, unclear, or opinionated (my first question on this site broke one of those rules, so I'm trying to not repeat the same mistake).
Update: Should I decide to take an ABRSM exam, is it something you can do online or does it have to be a face to face sort of thing? Also would I have to start with the grade 1 exam or can I choose any grade I want for the first exam?