CHS has had a major addition every 20 to 30 years. In the 1930s, an industrial arts wing brought students the skills needed during the Great Depression. In the 1950s, 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 70s, 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 A/V room and a TV studio were built. With these additions, the earlier 1927 structure is only visible from the front facade and between later additions. In 2005, 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 2009, renovations were completed on the main entryway, reviving original stone and woodwork, but with a conspicuous misspelling of the school's motto, ""Excelsior"", carved as ""Excelcior"" into the masonry floor.

Figures used in this chart are based on the most up to date estimate or projections by the national census authority where available, and are usually rounded off. Where updated national data are not available, figures are based on the 2013 estimates by the Population Division of the United Nations Department of Economic and Social Affairs. Because the compiled figures are not collected at the same time in every country, or at the same level of accuracy, the resulting numerical comparisons may create misleading conclusions. Furthermore, the addition of figures from all countries may not equal the world total.

Bemis, Samuel Flagg. John Quincy Adams and the Foundations of American Foreign Policy (1949), the standard history of Monroe's foreign policy.

BMP-1 (700) and BMP-2 (1500+)Sarath -(AFV) mechanised infantry combat vehicles relegated the OT-62/64 to mortar carriers. The BMP-2 are now being modernized with TISAS (thermal imaging stand alone sights), better fire control, and more modern ATGM armament (Konkurs M). BMP-1 has been phased out and the upgraded BMP-2 is BMP-2 M with two thermobaric missiles and two tandem warhead Konkurs missiles. Its also has an integrated TI sight, an LRF, and has an AGL mounted on the turret which is also stabilised in the horizontal plane. 100 gets added each year.