In 33 years never
When the moon and stars align. Not only that but “it has to be in the yearly budget”.
Every 6 months
Most people should get a raise after making probation but it likely won't be the amount that was promised.
Never. The union has to force the district to raise wages.
Not very often
Automatic annually, but usually only 5 steps (years) then you need to promote to a higher job class. (good luck with that)