“九年(nian)(nian)(nian)(nian)(nian)一貫(guan)(guan)制”學(xue)校，通(tong)常是(shi)指該校的小(xiao)學(xue)和(he)初(chu)中施行一體化的教(jiao)育，小(xiao)學(xue)畢業后(hou)可直升本(ben)校初(chu)中，“小(xiao)升初(chu)”原(yuan)則上(shang)不許擇校流動(dong)，希望在本(ben)校升初(chu)中的學(xue)生也不用為上(shang)初(chu)中費盡心思；九年(nian)(nian)(nian)(nian)(nian)一貫(guan)(guan)制學(xue)校的年(nian)(nian)(nian)(nian)(nian)級(ji)通(tong)常被(bei)稱為1年(nian)(nian)(nian)(nian)(nian)級(ji)、2年(nian)(nian)(nian)(nian)(nian)級(ji)……，至9年(nian)(nian)(nian)(nian)(nian)級(ji)。這樣在學(xue)生年(nian)(nian)(nian)(nian)(nian)齡較小(xiao)，適應能力較弱的時候(hou)的教(jiao)育會有(you)一個連貫(guan)(guan)性。

"十二(er)年(nian)一(yi)貫制(zhi)學(xue)(xue)校(xiao)"是指集小(xiao)學(xue)(xue)、初中(zhong)(zhong)(zhong)(zhong)和高(gao)中(zhong)(zhong)(zhong)(zhong)為一(yi)體(ti)的12年(nian)一(yi)貫制(zhi)學(xue)(xue)校(xiao)。學(xue)(xue)校(xiao)主要有三個特點，一(yi)是連貫性，學(xue)(xue)生可以從從一(yi)年(nian)級(ji)至十二(er)年(nian)級(ji)，相繼完成小(xiao)學(xue)(xue)至高(gao)中(zhong)(zhong)(zhong)(zhong)教育(yu)，其間不(bu)(bu)間斷、不(bu)(bu)選拔(ba)。二(er)是就(jiu)近入(ru)學(xue)(xue)、取消招生考(kao)試。小(xiao)升(sheng)初直接升(sheng)入(ru)本校(xiao)初中(zhong)(zhong)(zhong)(zhong)和高(gao)中(zhong)(zhong)(zhong)(zhong)，不(bu)(bu)必再(zai)受(shou)小(xiao)升(sheng)初、中(zhong)(zhong)(zhong)(zhong)考(kao)折磨之苦。三是實行(xing)統(tong)一(yi)的學(xue)(xue)校(xiao)行(xing)政、教育(yu)、教學(xue)(xue)管(guan)理。