The way to make sure your students all pass is to do your job, those students need a teacher that cares and not one that 'needs a job', and preferably one that does not start off with the self-reinforcing viewpoint that a good fraction of them are too dumb to learn the material on offer.
Seriously, consider changing jobs to something with less of a negative effect on people's lives.
I've been on the receiving end of this attitude and it harmed me quite a bit, later on, with better teachers some of the damage got fixed but I most certainly would have traded two of my math teachers that 'needed a job' for some of the (much) better ones. Thanks to Fred Pach and one Mr. Groot I'm not a total loss at math and it ended up not being my skills but those of the teachers that were deficient.
It appears you are letting your past personal experiences distort your judgments about me. It’s ok. I understand this. It’s natural but it makes it hard to have a discussion about whether or not it’s the case that everyone can learn algebra.
You made a statement that the way to pass everyone is to do my job. Clearly you have not taught much in a classroom with a wide variety of students. Consider the possibility that you simply don’t know anything about the craft of teaching other than your very limited experience of being a student and that as such you should be wary of making negative conclusions about me.
I actually do because I read all of your comments in this thread.
When I mention that I just mostly pass my students now they understand that grades are an administrative aspect to the job and know that this is detached from my desire to get as many students as possible to learn as much as possible. People with extensive experience don’t harp on my statements about grading. At most they’ll claim they don’t lower their standards but they don’t make any wild conclusions about me like you did.
But you, you’ve made wholly unjustified conclusions about me and that says you don’t know the nuances involved. You don’t immediately understand that one can think not everyone can learn a topic and still be passionate about learning.
You’ve obviously not taught much in the classroom. Why is it so obvious? Consider the possibility that your thinking on this issue is clouded by your past.