一师一校是云南特殊的自然地理环境和社会历史发展的差异所决定的一种办学形式。据1990学年度统计,云南共有小学53556所,其中,一师一校的小学有23879所,占全省小学总数的44.5%。全省的小学校数与人口数和云南相近的辽宁省相比,多出一倍,其原因就是云南的地理环境 One division and one school are a kind of schooling form determined by the difference in the development of Yunnan’s special natural geographical environment and social history. According to the statistics of the 1990 academic year, there are 53,556 elementary schools in Yunnan, of which, 23,879 primary schools and one elementary school account for 44.5% of the total number of primary schools in the province. The number of primary schools in the province is twice as large as the number of people in the province and Liaoning province in Yunnan. The reason is that the geographical environment in Yunnan