I really don't know anything about how they teach in schools. All I ever heard was that programs were being cut. But I don't know how true this is either.
I know how I teach in the school.
I teach music, not just vocal or instrumental, but both. I have beginning band students that are hacking their way through music fundamentals (names of notes on the grand staff, dynamic markings and what they mean, note and rest values and how to play them accurately, articulations for the beginners are a short list - but they have enough to create music - not noise, and they are required to learn up to 4 b's and 4 sharps - scales/keys prior to passing from beginning band status). I have three bass players that are learning every note up the neck to the 12th fret and how to play their scales in at least three positions.
All of my classes are required to learn the major, natural minor, harmonic minor, and melodic minor scales. They add more each year as they progress through the program. By the time they graduate they know all 48 scales (12 x 4 scale types) for passage. They will also know several other scales of their choosing. (their favorites are the blues scales and some hybrid scales - bebop minor etc.)
Further they learn how to read music. I do not allow tabs in any of my classes. Notes, chord changes (jazz), and one of the most important things for the bass players is the groove. My motto is "no groove, no food."
My singers, horn players, guitar/bass players, ... all need to learn to read music and have the ability to play any genre I give them for a particular show or series of shows.
You might think that this is pure Nazi-ism on my part. Maybe it is. But they can feed themselves with their musical skills, if need be, and they can play with nearly anyone that they want and hold their own. They can audition for colleges/universities and pass those auditions and continue through college and get the rest of the skill sets that they need to be a professional musician, if they so choose.
My vocal jazz groups routinely get: swing, bebop, blues, latin, a capella charts of varying styles, a little rock and a little pop.
The adv digital media students get: covers semester one - to learn how the pro's write (I base their choice selection on the top 5 charts and the top 100 songs on those charts - Billboard, CMT, BET, etc.). They are required to perform that semester and be an entrant in our rock festival with 1 original tune between two covers. They can not compete but they do perform and get graded just like everyone else.
The second semester the students are required to write an original tune. They have to hire the other students in the class and get them to rehearse, write parts if need be, and then record their songs. Those songs are sent to a producer in Hollywood (a friend of mine) and he gives them positive, constructive criticism on their work. Then we go back and fix things as needed and then burn a CD to present to the producer...he comes to the school and does a final critique in an open forum. He will play the CD, make notes, then talk through the process of what the students might do to make something better. He even offered a distribution deal to a couple of our students.
Our students are not perfect. Far from it. But they are getting the real deal. I got the real deal in high school and I believe that my students deserve better than a place to hang out and just "play guitar, dude!"
I have never had an issue with the truth. It is something that sets a person free to understand what it is that everyone else is thinking and how they are actually perceived in the real world. I tell my students that I will never tell them a lie. I might ask if they want me to sugar it up a little bit...but... Also, I let them know that I, and others like me "micromanage" them during rehearsals and class times so that they get it right every time. Not just once in a while... but every single time.
I don't know if I am rare in the US. I know that all of my music teacher friends are the same way with their programs.
Finally, yeah I can talk a great deal, it is up to the student to decide to do the work. Cliche or not...you can drag the mule to water, but you surely can't make him/her drink.
Ok. Done for now.