That is true, and it's worthy to note. Also note that many of these administrative jobs present promotion opportunities to those teachers that place politics above performance. As one who has experience in government employment, I can say with certainty that politics plays a much larger role in one being considered for promotion than does competence. Of course politics is part of any job, but in the government world, it ranks much higher.
How many vice-principals and psychologist/social workers does a school really need?
According to our governor and general assembly, each high school needs and will get at least one more next year - a counselor to prevent dropouts.
My personal opinion is that if they'd put that money and effort into boosting basic skills in lower grades, they wouldn't need the dropout prevention counselor, but no one asked me.