When I get a new student, I always ask the student what kind of music they would like to play? Some don't answer me but many do! Some say fiddle, celtic, Irish, Scottish, Cajun, or of course classical. Some like hymns, others like contemporary Christian music, and many students like to play by ear. Young students often love the Suzuki books while many students like shorter pieces like the Applebaum series.
We teach scales and positions and etudes also. There is a rich history for the string instruments with these materials. We do it all!