This old [late '70's] Brit comedy is set in an ESL classroom. All the students are blatant stereotypes of the era, including a dogma driven little red book waving Chinese woman.
It's still a laugh though, with mispronounciations and misunderstandings galore. It's on Google videos in full episodes.
My mixed group of high school ESLers think it's hilarious, and don't miss a trick. Many of them are Chinese BTW.