Helpful guidance from the NCLRC.
How is the information organized? Does the story line, narrative, or instruction conform to familiar expectations? Texts in which the events are presented in natural chronological order, which have an informative title, and which present the information following an obvious organization (main ideas first, details and examples second) are easier to follow.
How familiar are the students with the topic? Remember that misapplication of background knowledge due to cultural differences can create major comprehension difficulties.
Does the text contain redundancy? At the lower levels of proficiency, listeners may find short, simple messages easier to process, but students with higher proficiency benefit from the natural redundancy of authentic language.
Does the text offer visual support to aid in reading comprehension? Visual aids such as photographs, maps, and diagrams help students preview the content of the text, guess the meanings of unknown words, and check comprehension while reading.