“九(jiu)年(nian)一貫(guan)(guan)制”學(xue)校(xiao)，通(tong)(tong)常是(shi)指該校(xiao)的小(xiao)學(xue)和初(chu)中(zhong)施行一體化(hua)的教育(yu)，小(xiao)學(xue)畢(bi)業(ye)后(hou)可直升(sheng)本校(xiao)初(chu)中(zhong)，“小(xiao)升(sheng)初(chu)”原則上不許擇校(xiao)流動，希望在本校(xiao)升(sheng)初(chu)中(zhong)的學(xue)生(sheng)也不用為上初(chu)中(zhong)費盡心思；九(jiu)年(nian)一貫(guan)(guan)制學(xue)校(xiao)的年(nian)級通(tong)(tong)常被稱為1年(nian)級、2年(nian)級……，至9年(nian)級。這樣在學(xue)生(sheng)年(nian)齡較小(xiao)，適應能力較弱的時候的教育(yu)會有一個連(lian)貫(guan)(guan)性(xing)。

"十(shi)(shi)二年(nian)(nian)(nian)一(yi)(yi)(yi)(yi)貫(guan)制(zhi)學(xue)(xue)校(xiao)(xiao)"是指集(ji)小(xiao)(xiao)學(xue)(xue)、初(chu)中(zhong)(zhong)(zhong)(zhong)和(he)高(gao)中(zhong)(zhong)(zhong)(zhong)為(wei)一(yi)(yi)(yi)(yi)體的12年(nian)(nian)(nian)一(yi)(yi)(yi)(yi)貫(guan)制(zhi)學(xue)(xue)校(xiao)(xiao)。學(xue)(xue)校(xiao)(xiao)主要有三(san)個特點，一(yi)(yi)(yi)(yi)是連(lian)貫(guan)性(xing)，學(xue)(xue)生可以從從一(yi)(yi)(yi)(yi)年(nian)(nian)(nian)級至(zhi)十(shi)(shi)二年(nian)(nian)(nian)級，相繼完成小(xiao)(xiao)學(xue)(xue)至(zhi)高(gao)中(zhong)(zhong)(zhong)(zhong)教(jiao)育(yu)，其間不間斷、不選拔。二是就近入(ru)學(xue)(xue)、取(qu)消(xiao)招(zhao)生考(kao)試。小(xiao)(xiao)升(sheng)(sheng)初(chu)直接升(sheng)(sheng)入(ru)本校(xiao)(xiao)初(chu)中(zhong)(zhong)(zhong)(zhong)和(he)高(gao)中(zhong)(zhong)(zhong)(zhong)，不必再受小(xiao)(xiao)升(sheng)(sheng)初(chu)、中(zhong)(zhong)(zhong)(zhong)考(kao)折磨之苦(ku)。三(san)是實行(xing)統一(yi)(yi)(yi)(yi)的學(xue)(xue)校(xiao)(xiao)行(xing)政(zheng)、教(jiao)育(yu)、教(jiao)學(xue)(xue)管理(li)。