The school might let her know which districts they have a relationship with. You can go to the district’s website, look under HR and look for certificated staff salary schedule. It should show you how much counselors are paid. You can also Google “XYZ salary schedule” to find where it is posted.
Both teachers and counselors are paid based on the number of units they complete after their bachelor’s degree. The number of units completed puts an employee in a different column. Each step in the column (going down) is the number of years they have been working. For example, Alameda’s salary schedule (scroll down for counselors) vs Santa Clara’s salary schedule.