chs has had a major addition every  to  years in the s an industrial arts wing brought students the skills needed during the great depression in the s a large addition now known as "c-wing" added classrooms to cope with increasing student numbers as well as a massive gymnasium bringing the total number of gyms to three in the early s a projected enrollment boom and the need for new science fine arts and industrial arts space created the need for "b" and "d" wings a new cafeteria the largest public school library at the time space for academic advising a now-gone small movie theater and av room and a tv studio were built with these additions the earlier  structure is only visible from the front facade and between later additions in  much of the space previously used for industrial arts such as wood shop and auto shop was transformed into a theatre performance and general use space in  renovations were completed on the main entryway reviving original stone and woodwork but with a conspicuous misspelling of the schools motto "excelsior" carved as "excelcior" into the masonry floor