"According to research how does the rate of reading progress made during the school year for students living in poverty compare with that of students who do not come from impoverished backgrounds?"

about the same rate

Explanation:

Based on the information provided within the question it can be said that progress made during the school year is about the same rate regardless of the background of the children. Researchers believe this is because all of the students are being taught with the same curriculum as one another regardless of their backgrounds, therefore they progress at about the same rate.