I have the worst boss

I work for a daycare. The director there is horrible. She has favorites and treats other teachers like shit. She rude and is ungrateful of what we do. She shares private information with a specific teacher who quit. She’s very unprofessional. Is very unprofessional too, will post passive aggressive notes or will tell another teacher you complained about them and will roll her eyes. She yells at kids and can be at times aggressive.