Zhè wèi lǎoshī de jiàoxué fāngfǎ shòudào le xuéshēng hé jiāzhǎng de jiāokǒuchēngzàn.
This teacher's methods earned unanimous praise from students and parents alike.
Tips
history
Traces to Han Yu's Tang-dynasty 《柳子厚墓志铭》: '诸公要人,争欲令出我们下,交口荐誉之。' — Han Yu's epitaph for Liu Zongyuan notes how prominent officials all vied to recommend him.
usage
Strongly positive. 交口 literally means 'mouths meeting' — everyone's mouth saying the same thing. Subject of praise typically follows 对 or is in a 的 construction: '受到了X的交口称赞'.