The overcrowding at the high school has created classrooms with too many students. The school district is considering having students take classes at the nearby middle school, which has some empty rooms. The district may also bring in portables as a temporary fix until they can build more classrooms.

Which organizational structure is used?

compare and contrast
problem and solution
list
cause and effect

The term organizational structure refers to the way information in a text is organized that varies according to the topic and purpose of the author with the text. Most common organizational structures include chronological organization in which information is organized according to time; cause and effect in which the multiple effects or consequences of a situation are explained; compare and contrast in which the author describes the differences and similarities between two or more elements and problem and solution structure in which the author presents a problematic situation and multiple solutions to solve it. Considering this, in the case of the text presented the organizational structure is "problem and solution" considering the author first introduces a problematic situation which in this case is the overcrowding at schools and then proposes different solutions to it such as using a nearby middle school or using portables, which shows the purpose of the author is to explore possible solutions to solve a problematic situation.