Why Reading Is the Foundation of Every Test Score

From the Independent School Entrance Exam (ISEE) to the SAT, verbal sections test the same underlying skills: locating a main idea and its supporting evidence in an unfamiliar text, inferring word meaning from context, and recognizing an author’s stance and tone. There is no shortcut to those skills. They are the product of what a student has read, and how much, over several years. This guide is for families of students in grades 2 through 12 and covers what these exams actually ask, what national data show, and how reading should be structured at each stage.

Reading and test scores: Three Exams, One Underlying Skill

The ISEE Reading Comprehension section appears at every level. It assesses a student’s ability to understand main and supporting ideas, make inferences, apply context clues to define vocabulary, and analyze a passage’s organization and logic as well as its tone, style, point of view, and figurative language. The Verbal Reasoning section consists of synonyms and sentence completions, testing vocabulary and reasoning together.

The SAT Reading and Writing section uses short passages of 25 to 150 words, each followed by a single multiple-choice question. Questions fall into four content domains: Information and Ideas, Craft and Structure, Expression of Ideas, and Standard English Conventions. Passages are drawn from literature, history and social studies, the humanities, and science.

What these have in common is that the text is always unfamiliar, the subject matter ranges widely, and the question is rarely what the passage says. It is why the author said it that way. Practice tests build familiarity with question types, but they cannot substitute for reading speed and comprehension on unfamiliar academic prose.

Reading and test scores: What the National Data Show

The National Assessment of Educational Progress (NAEP) is the federal assessment administered across the United States. Its 2024 reading results show that the national grade 4 average was 2 points lower than in 2022 and 5 points lower than in 2019. Thirty-one percent of fourth graders performed at or above the NAEP Proficient level, 2 percentage points below 2022 and 4 points below 2019. Sixty percent performed at or above NAEP Basic, which means 40% of fourth graders fell below the basic level.

At grade 8, the national average was 257. In California, the grade 8 average was 254, with 28% at or above Proficient and 63% at or above Basic. At grade 12, the national average was 3 points lower than in 2019 and 10 points lower than in 1992.

These figures should not be read as a weakening of competition. ISEE percentiles are calculated against students who took the exam over the previous three years, a group already self-selected for independent school admission. When national reading performance declines, the comparison group on the admissions side does not move with it.

Reading and test scores: Why School Grades Do Not Surface the Problem

Reading difficulties rarely announce themselves. They show up in three ways: a student finishes a book but cannot explain it; comprehension errors cluster in inference and main-idea questions rather than vocabulary; and in middle school, history and science textbooks become unreadable. The shared cause is that reading has stayed at the level of words and plot and has not moved to structure and argument.

A school grade reports how fully a student meets the current grade’s expectations. It says nothing about the ceiling of text difficulty a student can handle. A fifth grader can earn strong classroom marks and still land in the middle percentiles on ISEE Reading Comprehension, because the comparison group and the text difficulty are both different. The useful measure is a standardized reading level assessment, not a unit test score.

Reading and test scores: A Reading Plan by Grade

• Grades 2 to 4: build volume and habit, and introduce non-fiction gradually. The goal is for the student to explain in full sentences what a text said.
• Grades 4 to 6: alternate fiction and non-fiction, and practice separating main ideas from supporting detail and fact from opinion. Students aiming at ISEE Lower Level begin accumulating academic vocabulary here.
• Grades 6 to 8: move to evaluating evidence and comparing claims across texts, which matches the difficulty of ISEE Middle and Upper Level reading and the academic reading load of high school.
• Grades 9 to 11: organize close reading around the four SAT Reading and Writing domains, across literature, history, the humanities, and science, with reading speed on unfamiliar academic text as the priority.

EDUBUS Recommendations on reading and test scores

Reading pays back over years, not months. The habits a student forms before grade 8 largely set the starting point for SAT Reading and Writing, and starting to build reading capacity in grade 11 rarely leaves enough time to change comprehension speed. EDUBUS recommends establishing a starting point with a standardized reading level assessment and selecting material by level rather than by grade. The EDUBUS leveled English reading program, L1 to L5 Plus, covers six levels across grades 2 to 8, with placement based on an entry assessment.