It's hard for me to take what you're saying seriously. You are disagreeing with the idea that leaders should be well-prepared to do their jobs, because you think they mainly are going to harm people. Therefore, you reason, we should not attempt to improve their education, because (by your argument) we want them as incompetent as possible, to minimize the damage they can do.
For me, if even one kid has a strong desire to learn and is hampered by a bad school, I think that's worthy of attention.
You seem to miss the point that everything is relative. Badness of schools is relative; there is always a "worst" school out there hampering someone. Attention is also relative; giving attention one place means taking it away from somewhere else.
If anything, hard power tends to corrupt teenagers.
Who is suggesting giving power to teenagers?