You are 100% spot on. The last time I had a vacancy on my staff, I actually had two (assistant jobs at both HS and MS). During the "process", I combed through more than 110 resumes and cover letters. I ended up setting up interviews for five at each position. There was no way I was going to take the time to respond to the other 100+, nor should I (or anyone else) have been expected to. Apply a little common sense here...if you weren't one of the ten we interviewed, you weren't getting either of the jobs.
As for the ten I did interview, I emailed each of them (who didn't get the job), but not until...
1) an offer was made
2) offer was accepted
3) all paperwork was completed
4) Employment was ratified by the board
That doesn't happen overnight. Maybe even a month-load of overnights
This is to be expected. I send resumes and cover letters and don't EVER get a response unless it is to set up an interview. I think it must be policy to not acknowledge the existence of any other email. I get your frustration, but if I were a director, I wouldn't want to spend hours responding to every single email inquiry. The only way to keep myself from doing this would be to say I won't respond to ANY of them.
It irritates me to no end when you email a head high school band director or fine arts director and ask if a position has been filled, and they donít have the common curtesy to at least respond to the applicant and let him or her know. Thank you, that is all!