Mundelein High School District 120 voters on Tuesday approved a plan that will raise $10 million for campus improvements.
With ballots in all 31 precincts counted, 1,659 people voted for the plan and 892 voted against it, unofficial results showed.
"We thank the voters of Mundelein for listening to our concerns and understanding the need for making critical improvements to Mundelein High School," Superintendent Jody Ware said.
The plan will extend the school's debt to raise $10 million over three years, with the loan to be repaid in seven years. Officials say it will not increase taxes.
Roofing repairs, a new running track and installation of artificial turf on the football field are among the projects that officials say are priorities.
They also want to replace single-pane windows in the oldest part of the school, upgrade bathrooms and the electrical system, and deepen part of the indoor pool to make it safer for competitive swimmers.
"The improvements will make our facilities safer, more energy efficient, healthier and a better learning environment for students and staff," Ware said.
It's the first tax referendum that District 120 voters have approved since 1995.