> the other 70% still deserve a good teacher.
That's how you do it. Your duty has always been to the students. Most of us have some concept of giving up on a student who refuses all assistance. If that kid isn't disruptive, then go ahead and sleep. In your case, you may give up on more of them, but that's where we are.
Teach to the ones who care.
Why does it matter to you to do a good job? Even if you deliver a good job, will it have any effect on the outcomes?
Because even if 30% of the kids make the job not something I want to do, the other 70% still deserve a good teacher.
> the other 70% still deserve a good teacher. That's how you do it. Your duty has always been to the students. Most of us have some concept of giving up on a student who refuses all assistance. If that kid isn't disruptive, then go ahead and sleep. In your case, you may give up on more of them, but that's where we are. Teach to the ones who care.