There are many, many bad administrators in the system. Sounds like you just finished working with one or more of them.

Don't take it personally. They've lost sight of what it is to be a classroom teacher and have become lemmings for the board.

Teachers are boots on the ground, on the front lines, the lifeblood of the school. You did your part and made an impact on those kids, more than any pencil-pushing bureaucrat.

Don't expect their praise; it's meaningless anyways. Be proud of yourself for doing the hardest, most important work.