Overwhelmingly often, students will rise to the bar you set for them. They will not always clear the bar, but they will rise to meet it.
Musical students have infinite potential for growth, and too many students turn away from music-making, or never reach their potential, because their leaders do not set the bar high enough.
Set the bar higher. You will risk disappointment, you will fail to serve them well as you grow, too. You will not always do justice to good music.
But your students will rise. Today, tomorrow, and long after they leave, they will rise because of where you set the bar. Or they won’t.