I am trying to do a teaching diploma at the lowest possible cost, because basically I don't have any money! So it's not really in my budget to go out and buy a whole load of beginner material from the ABRSM syllabuses grades 1-5 on viola, especially when most kids start out on violin for size and other reasons. Do you think it's OK to take in music for both viola and violin? I'll take both instruments too, but it's just too costly to get several volumes of new viola music, and I have a heap of beginner violin stuff and old AB exams, and the current AB violin music is available in my local library, along with a good variety of tutor books. I started viola at grade 6 so I just don't have the materials here, and the library isn't stacked with these either. To get at least one book from each grade 1-5 and then add to it with the 3 pieces for grade 6 (much dearer for viola than violin as you have to buy 3 whole volumes of stuff, not just a collected works book) is going to add up very, very fast.

(And in any case I am not married to the idea of choosing AB exams for each pupil, if someone would be better with the repertoire and exercises that goes with the Trinity then we will go that way, so I can't even look at all this material as necessarily being an investment)