Veronica, I felt exactly the same way about my co-workers when I was teaching. So much so, I stopped socializing with them many years ago. I was fortunate to have a boss with extremely high expectations, but with the same attitude as me, so it worked. I hated the union, which demonized me when I started teaching in MA. They didn't represent me, either. I found that a lot of teachers couldn't talk about anything else other than the negative parts of their job, and many just had no lives outside of their families. I just never felt I fit in with most of them, until my last job, when after a few years, most of the teachers were young and had enthusiastic attitudes.
Just keep working for the kids. You know what's right.