Ok, you guys are making it hard for me, but here goes!
First to Tash:
if you have some kids reading music through the AN then they're going to get completely screwed when it comes to doing stuff in class, and if they want to join the orchestra or other ensemble i doubt the conductor is going to go find a copy of the score in the AN.
You might ask this question to Jean de Buur at
www.mnma.org. She teaches Klavar notation in France and has reported on comparing progress with TN and Klavar notation in high school piano students. Klavar, invented by the Dutchman Cornelius Pot, is the oldest commercial AN, with over 200,000 pieces of music published.
My own answer would be that the music teacher gets his scores online or arranges in a music software program which he sends to the AN kid's PC, and the kid sticks it in his converter and out comes the piece in ES or whatever he wants.
but with this AN, reading the little notes that are still in the same little gap between lines could prove a pain because if the composer is too careless there could be trouble with working out what note it's actually meant to be.
Same with carelessly written TN. If a note is not precisely in the space or on the line, the player grinds to a halt. This occasionally happens with printed music too. As far as the handwritten ES notes go, the writer has to draw the note so that it touches one line or doesn't. I found that the non-touching notes were the hardest, but they have a spot in the printed notation so they cant be misread. Putting the spot in the centre of a handwritten note was a pain, so I decided that in handwriting ES, a > symbol is used instead for these center-spaceband notes (B and F). The other notes are all pretty foolproof.
like we're thinking budding composers who are just doing school stuff, then their teachers are going to be what if they don't understand the notation...
I think maybe the teacher will be like what anyway with some budding composers.

Tictacs, sorry tac-tics:
There is nothing wrong with aiming for precision in maths notation or any other. When the mathematician wants a new term or concept he makes sure he clearly defines it - maybe this is what your teacher forgot to tell you. "sin(2)x" is defined as meaning sinx by sinx. Now what does "C-9" mean? C minor with a 7th and major 9th added, or C major with a 7th and minor 9th added?
I am flattered to think you guys are considering my notation invention as a rival for TN! All I want is for more people to be able to enjoy music making. Many alternative notations could do this. Why learn two different clefs, four different sets of legerlines, 5 accidental signs, and 15 key signatures, when you could have all 12 pitches depicted logically, the same for all clefs and octaves, nothing more needed.
I just think ES has a better chance for pianists, because it is closer to the bass clef, intervals are about the same size as in TN so chord shapes look familiar, and a black and white coding representing the 5 black and 7 white keys is more intuitive than most other AN note codings.
I had the 'revelation' of seeing the symmetrical pattern of ABCDEFG on the keyboard at the age of 17, and I also defined the black key letternames
HIJK and
L at that age. I think maybe at this age the brain is more logical, creative, and less brainwashed by conventions, than at any other age. Good on you for wanting a tighter maths syntax in your highschool calculus class. May you never loose that mindset!
Regarding ornaments, I suppose they could be written out, but to be consistent with what I've just said, I should just have a definition of each ornament written for reference before the piece.
Thanks for your interest.
John
PS We've broken through the 1000 readers barrier!