“九(jiu)(jiu)年(nian)(nian)(nian)(nian)(nian)一(yi)貫制”學(xue)校(xiao)，通常是指該校(xiao)的小(xiao)學(xue)和初(chu)中(zhong)施行一(yi)體化的教育(yu)，小(xiao)學(xue)畢業后可直升本校(xiao)初(chu)中(zhong)，“小(xiao)升初(chu)”原則(ze)上不許擇(ze)校(xiao)流動，希望在本校(xiao)升初(chu)中(zhong)的學(xue)生(sheng)(sheng)也不用(yong)為(wei)上初(chu)中(zhong)費(fei)盡心(xin)思(si)；九(jiu)(jiu)年(nian)(nian)(nian)(nian)(nian)一(yi)貫制學(xue)校(xiao)的年(nian)(nian)(nian)(nian)(nian)級通常被稱為(wei)1年(nian)(nian)(nian)(nian)(nian)級、2年(nian)(nian)(nian)(nian)(nian)級……，至(zhi)9年(nian)(nian)(nian)(nian)(nian)級。這樣在學(xue)生(sheng)(sheng)年(nian)(nian)(nian)(nian)(nian)齡較小(xiao)，適應能(neng)力(li)較弱的時候的教育(yu)會有一(yi)個連貫性。

"十(shi)二年(nian)(nian)一(yi)貫(guan)制學(xue)校(xiao)"是(shi)指集小(xiao)學(xue)、初(chu)中(zhong)(zhong)和高(gao)(gao)中(zhong)(zhong)為一(yi)體的12年(nian)(nian)一(yi)貫(guan)制學(xue)校(xiao)。學(xue)校(xiao)主(zhu)要有三個特點，一(yi)是(shi)連貫(guan)性，學(xue)生可(ke)以從從一(yi)年(nian)(nian)級至十(shi)二年(nian)(nian)級，相繼(ji)完成(cheng)小(xiao)學(xue)至高(gao)(gao)中(zhong)(zhong)教育，其間(jian)不(bu)間(jian)斷、不(bu)選拔(ba)。二是(shi)就近入(ru)學(xue)、取消招生考(kao)試。小(xiao)升(sheng)初(chu)直接升(sheng)入(ru)本校(xiao)初(chu)中(zhong)(zhong)和高(gao)(gao)中(zhong)(zhong)，不(bu)必再受小(xiao)升(sheng)初(chu)、中(zhong)(zhong)考(kao)折磨之苦(ku)。三是(shi)實行(xing)統(tong)一(yi)的學(xue)校(xiao)行(xing)政、教育、教學(xue)管理。