The premise of your argument seems to be that the public school system is flawed, and that you shouldn't have to pay into it, especially if the teachers aren't working.

This implies a lack of care for social responsibility and a lack of respect for the people that are actually having to take the risk.

While I appreciate the point of view that it isn't quite fair, I'd point out that a) teachers should have a right to health and safety in the workplace, b) social mobility would be obliterated if you could opt out of funding public schools, and c) you're likely arguing this from an office where you're at much lower risk.

It's not a great position to be in, sure. But arguing that we're not being kind in our position when yours seems to be "but they're wasting my money" seems to be borderline misanthropic.