I am an experienced player of the trumpet, but I am not an experienced teacher of the instrument. So I am asking those who teach trumpet a question about teaching, especially to a beginning student. My son is entering 9th grade and has developed an interest in the trumpet this summer, so much so that he's interested in participating in the high school band. This is great! He is motivated, and so am I in helping him. He reads music already (he's a pianist). We're having fun playing together each day for about 20 minutes, warming up with mouthpiece and leadpipe buzzing and then working mostly on long tones for proper breath support and then some basic articulation exercises. He's getting a nice tone in the low register, but mid-staff and above is a strain for him still. Because I don't teach beginners, and it's been years since I was one, I have no context for how quickly he should be improving. If he's playing everyday for 20-30 minutes, should he be getting to the C above middle C (and beyond) within a couple of weeks? A month? What would be a reasonable expectation for him to be able to do by the time school (and the marching band season) starts in late August? Thanks!