I have this one student who can't do a one hour lesson because of conflicts with her other after school commitments. She's an excellent player and learns at about the same rate as most people, but it seems really hard to "cram" a full analysis of all 5 of her pieces, technical tests, ear tests, sight reading exercises, and a theory lesson all into 30 minutes. With theory, I can always give her handouts on the important things she'll need to know but with something like sight reading, I can't simply give her the book and say "Ok, take this home and site read everything once" and expect her not to practice it a few times until she gets it right. Ear tests she can do at home and then I'd give her a few short ones to do during the lesson. But those 5 pieces...every single one has about a hundred different things she could fix (dynamically). I don't want to wait too long for her to take her exam because I'm afraid she might grow bored of the pieces.
I'm only concerned with her sight reading and ear tests, I've told her how the examination process works (the examiner plays a short phrase twice, playing the four-note tonic chord once and she's to play back the melody that he/she played), however, during a lesson I'll have to play the phrase about 6 times! How can she improve on this without taking too much time away from the study of her pieces?