Flexible shifts hiring in Albuquerque

I am looking for part-time work that fits around school hours and found a few evening shifts near Albuquerque. I have read a lot of threads here and could not find my exact situation. They can give a schedule two weeks ahead. Is the schedule really fixed?

Thanks for writing this out. I went through something close to it 11 months ago, and it got easier once I kept a simple log of every call and form.