integrated education; continuous school system
Refers to a system where students can progress from elementary through secondary (and sometimes tertiary) levels without entrance exams, often within the same institution or affiliated schools.
This school adopts an integrated education system, so students can advance from junior high to senior high without entrance exams.
一貫教育 refers to the overall educational philosophy of continuous schooling across levels, while 中高一貫校 is the specific institution that carries it out.
integrated school system; combined school
Compound of 一貫 (いっかん, 'consistent, through') and 教育 (きょういく, 'education'). The term describes a seamless educational pathway.