noun
all-English (teaching method)
Refers to an approach where English is used exclusively in the classroom, without relying on the students' native language.
この学校ではオールイングリッシュの授業を行っています。
This school conducts classes entirely in English.
オールイングリッシュの環境で英語を学びたい
I want to learn English in an all-English environment.