https://www.communityadvocate.com/2012/06/27/updated-pope-to-leave-marlborough-school-superintendent-post/
I don't know what state you are in, but it wouldn't work this way in mine. The superintendent is hired with a contract, usually very beneficial to him. The only times I have seen a superintendent removed turned out to be insanely costly to the district, as they had to buy out his contract, and give him a ton of extra money and incentives. What I have successfully seen is the superintendent assigned duties that he doesn't want to do which will force him to leave. But, that was in the old days, and superintendents these days have become wise to that tactic, and word their contracts to keep that from happening.
You're not talking to another swivel-chair computer piker here. I've been a student/parent advocate since the early 1990's, and taken on MANY school districts. No matter how nasty it got, the superintendent was always the last man standing after teachers and other administrators were given the boot, and the district paid out big bucks in damages. Anytime a Texas superintendent comes under fire, the Texas Association of School Administrators steps in with their army of lawyers, and their only objective will be to protect the superintendents job for as long as he wants to stay. And, they are VERY politically connected and VERY powerful.
I have seen them turned out by direct petition like this goofball was. Or I have seen it come the other way by driving out a school board member then firing the superintendent. What a shame it is for you folks having such a hard time to remove a bad public servant.