Asklemmy

Public school teachers. Not willing to extend this to admin, though.

Everything single teacher ive even heard of is doing the job because either

1. They love children unconditionally
2. They want to raise the next generation to become productive adults who are prepared for the real world
3. They believe that everyone deserves enlightenment
4. They agree with Thomas Jefferson that school is preparation for participation in democratic society

Teachers that value money over one of these things typically do not last long.

Just to be clear, most teachers are just doing a 9-5 job they are good at. But if you ask them why they are teaching instead of making actual money in some other field, you eventually drill down to one or more of these beliefs.