HUNTLEY – District 158 and its support staff agreed to a three-year contract extension this week that includes regular salary increases and a performance bonus.

The district’s cooks, bus drivers, secretaries, janitors and teachers aides will receive an annual hourly raise based on the Consumer Price Index, with a floor of 2 percent and a cap of 5 percent, for the next three years in the contract that expires in June 2016.

The two sides also negotiated a one-time performance bonus of 0.5 percent of the union’s total payroll if the district meets its performance metrics in its strategic plan. The bonus averages $100 to $150 per support staffer.