Millions of dollars in improvements across Community High School District 155 schools are underway and on track to be substantially completed by the time classes begin Aug. 14, district officials said Wednesday. Pepper Construction is overseeing the $14.5 million capital improvement project, which is part of the district’s anticipated $50 million, 10-year strategic facilities condition assessment developed in 2015. The work, in response to state-mandated health/life safety inspections and input from the community, includes several projects at each high school – Crystal Lake Central, Crystal Lake South, Cary-Grove and Prairie Ridge. The extensive work throughout the district includes new and upgraded windows, air conditioning, piping, flooring, tiling and asbestos abatement, as well as new tennis courts and other elements students will notice when they arrive for the 2019-20 school year. The most noticeable work is being done at Crystal Lake Central High School, which originally was built in 1924.