“九年(nian)(nian)(nian)(nian)一貫制”學校(xiao)(xiao)，通常是指該校(xiao)(xiao)的小(xiao)學和初(chu)(chu)(chu)中(zhong)施行一體化(hua)的教育，小(xiao)學畢業后可直升(sheng)本校(xiao)(xiao)初(chu)(chu)(chu)中(zhong)，“小(xiao)升(sheng)初(chu)(chu)(chu)”原則(ze)上不許擇(ze)校(xiao)(xiao)流(liu)動(dong)，希望在本校(xiao)(xiao)升(sheng)初(chu)(chu)(chu)中(zhong)的學生也不用(yong)為上初(chu)(chu)(chu)中(zhong)費盡心思；九年(nian)(nian)(nian)(nian)一貫制學校(xiao)(xiao)的年(nian)(nian)(nian)(nian)級通常被稱為1年(nian)(nian)(nian)(nian)級、2年(nian)(nian)(nian)(nian)級……，至9年(nian)(nian)(nian)(nian)級。這樣在學生年(nian)(nian)(nian)(nian)齡較小(xiao)，適應能力較弱(ruo)的時(shi)候的教育會有一個連貫性。

"十(shi)二(er)(er)年一貫(guan)(guan)制學校"是指集小學、初中(zhong)(zhong)和高中(zhong)(zhong)為一體的12年一貫(guan)(guan)制學校。學校主要(yao)有(you)三個(ge)特點(dian)，一是連(lian)貫(guan)(guan)性，學生(sheng)(sheng)可以從從一年級至(zhi)(zhi)十(shi)二(er)(er)年級，相繼完成(cheng)小學至(zhi)(zhi)高中(zhong)(zhong)教育，其間不間斷(duan)、不選拔。二(er)(er)是就近(jin)入學、取消招(zhao)生(sheng)(sheng)考試(shi)。小升(sheng)初直接(jie)升(sheng)入本校初中(zhong)(zhong)和高中(zhong)(zhong)，不必再受小升(sheng)初、中(zhong)(zhong)考折磨之苦。三是實行(xing)(xing)統(tong)一的學校行(xing)(xing)政、教育、教學管理(li)。