elementary and middle schools
Abbreviation of 小中学校 (しょうちゅうがっこう). Used in contexts like education policy, school districts, or combined facilities.
See also: 小中学校
This area has introduced integrated elementary and middle school education.
Elementary and middle school teachers held a joint training session.
小中 covers only elementary and middle schools, whereas 小中高 adds high school (高校) to the range, so the two are easy to mix up when skimming text.
school (suffix/counter) · proofreading; proof (counter)
Abbreviation formed by combining the first characters of 小学校 (elementary school) and 中学校 (middle school).