$40,000 Bump in Teachers Pay at North Allegheny

Teachers pay at North Allegheny School District jumps by $40,000 per annum. For example, Teachers in category: A BS in Step 15A get paid at the rate of $57,780 during the First Semester and in the Second Semester, their pay rate increases to $94,700 per annum.
Teachers pay increases in the 15th year by about $37,000 to $40,000 per annum according to the Sections of the Collective Bargaining Agreement, I have received from the NA School District.
It is no wonder that our School Taxes are increasing every year.