Sentence:  Lortie coined the phrase "<WSD>egg crate</WSD> school," which refers to a type of organization wherein "each teacher was assigned specific areas of responsibility and was expected to teach students the stipulated knowledge and skills without assistance from others." 
Meaning of the word marked with <WSD> tags:  A self-contained class that has no collaboration or interaction with any other class, and which is the sole responsibility of a single teacher.