So.. you sack them all, who's going to teach? Or have you already got replacements? as if that's easy at this time of the year...
Why did you hire them in the first place? Did you check references, certificates..or did you just like the sound of them?
Monitor their classes and MAKE sure they do their job...
Another thing, maybe you should tell them that when they apply for their next job no serious DOS hires teachers without SPEAKING to their previous employers...
