The Clark County School District (CCSD) is the public school district serving Clark County in the U.S. state of Nevada. It is the largest school district in Nevada and the fifth-largest school district in the United States with 304,565 enrolled students in 2023–2024. The district also operates Vegas PBS (KLVX) television, a PBS-member station licensed to the district's board of trustees.

CCSD is the largest employer in both Clark County and Nevada with 43,786 employees as of October 2024^[update]. The district operates 373 schools, composed of 233 elementary schools, 61 middle/junior high schools, 54 high schools, 21 alternative schools, and four special schools. It has limited involvement with charter schools, and with the exception of providing some bus service, does not have any involvement with the private schools in the county.

In 1956, CCSD was formed from dozens of smaller school districts after Nevada adopted laws to consolidate and unify school districts state-wide based on county, with Carson City treated as a county as it is an independent city.

The first Western pioneers to settle Clark County were members of LDS church, represented by fewer than 100 settlers in 1851. The county was part of the Utah Territory until 1867, when Utah gave the region Nevada. At the time, Nevada was only three years old at the time the area was given to it. The first permanent settlement, St. Thomas, was established in 1865 and built the region's first school made of adobe. Prior to the 1956 consolidation, Nevada law allowed county commissioners to establish a school district if there were five or more school-aged children in a community. As a result, there were sometimes very large numbers of school districts within counties with very few people. Although much of the early 20th century was prosperous Nevada, like much of the rest of the country after World War II, the costs and complexity of so many districts gave rise to consolidation.

In 1956, Governor Charles H. Russell called a special session of the Nevada Legislature to pass a law to reorganize public education in Nevada, consolidating 208 school districts into 17 county-wide school districts, including the state capitol, Carson City, which is an independent city. This helped rural school districts with few students and teachers achieve economies of scale and provide higher-quality education by distributing tax revenue more equitably. When CCSD was consolidated, there were over a dozen school districts in Clark County alone.

During the 1960s and 1970s, CCSD became a focal point for desegregation efforts. Although Nevada did not have explicit segregation under the law, social customs and private businesses enforced de facto segregation depending on the context, one of which was in schooling. In Kelly vs Guinn in 1972, the Ninth Circuit Court of Appeals ruled that a lower court's order stand, requiring CCSD to implement policy to desegregate schools. Kelly vs. Guinn prompted initiatives such as busing students and creating specialized programs to try to overcome long-standing segregation in West Las Vegas.

In 2015, the Nevada Legislature passed Assembly Bill 394, directing a reorganization of the district into “local school precincts” with greater school-level authority. In 2017, the Legislature passed the bill, which as of the 2025^[update] session has been codified as NRS 388G.500–.810.

Among other things, it created school organizational teams (SOTs), required school-level plans of operation, and assigned certain budget and staffing authorities to precincts. The legislation's purpose was to shift power from the central school district offices to the school administrators with the hope of producing better outcomes.