How Does the New PreACT 9 Compare to the HSPT and ISEE?
The announcement that Chicago Public Schools has replaced the CPS HSAT with the PreACT 9 for Selective Enrollment High School admissions marks a big change to the city's high school application process. Although all three exams are designed to assess a student's academic readiness for high school, they were created for different school systems and each has its own structure, format, and testing philosophy. Understanding where the exams overlap, and where they differ, can help families prepare more efficiently.
Overall, like the HSPT and ISEE, the PreACT 9 is designed to measure a student's overall academic readiness through multiple sections rather than focusing primarily on math and reading as the old CPS HSAT did. Students will now complete Math, Reading, English, and Science sections over approximately two and a half hours, making the exam much more comparable in length and scope to the HSPT and ISEE.
While the tests have more in common with each other than with the old CPS HSAT, there are still differences in format, structure, and content. The PreACT 9 consists of four sections: Math, Reading, English, and Science. Students complete the exam digitally in approximately two and a half hours, are permitted calculators on the Math section, and receive no guessing penalty. The HSPT is organized somewhat differently, as it includes five multiple-choice sections: Verbal Skills, Quantitative Reasoning, Reading, Math, and Language. The HSPT is administered using paper and pencil, calculators are not allowed, and students receive very little time per question, making pacing one of the biggest challenges on the exam. The ISEE similarrly contains five sections, including Verbal Reasoning, Quantitative Reasoning, Reading Comprehension, Math, and an optional essay. Unlike the HSPT, students may take the ISEE once per testing season, giving families more flexibility when scheduling the exam. Schools may administer the ISEE digitally or on paper, but calculators are not permitted.
Despite these structural differences, the exams test many of the same core academic skills. All three include substantial reading comprehension and math components designed to measure middle school academic readiness. Students are expected to analyze passages, solve multi-step math problems, think logically, and work efficiently under timed conditions. Regardless of which exam a student is taking, strong reading, careful reasoning, and solid math knowledge foundations remain essential.
The English and language components illustrate both the similarities and differences among the exams. The HSPT's Language section focuses on grammar, punctuation, capitalization, spelling, and composition through standalone multiple-choice questions. The PreACT 9 also evaluates grammar and writing skills, but it does so through ACT-style editing passages in which students choose the best revisions for sentences and paragraphs. Instead of simply identifying grammar rules, students must consider clarity, organization, style, and rhetorical effectiveness within the context of a longer passage. The ISEE, on the other hand, approaches language somewhat differently. Rather than including a dedicated grammar section, it places greater emphasis on vocabulary through Verbal Reasoning questions involving synonyms and sentence completion. Students with strong vocabularies often have an advantage on the ISEE, while students taking the PreACT 9 may spend more time applying grammar and writing conventions in context.
The reasoning sections also distinguish the exams from one another. Both the HSPT and ISEE include separate quantitative reasoning sections that combine math with logic and pattern recognition. Students encounter number series, comparisons, and reasoning-based problems that extend beyond straightforward math problems and calculations. The PreACT 9 does not include a standalone reasoning section; instead, reasoning is integrated directly into the Math portion of the exam alongside algebra, geometry, functions, statistics, probability, and other grade-level math concepts.
Perhaps the most significant difference is the Science section, which appears only on the PreACT 9. For many families, this initially sounds like the biggest obstacle, but the section is somewhat different from a traditional science test. Students are presented with graphs, tables, experimental results, and scientific scenarios, then asked to interpret data, evaluate investigations, and draw logical conclusions. The emphasis is on scientific reasoning and data analysis rather than memorizing scientific facts, formulas, or vocabulary.
Timing is another important consideration. Although all three exams require students to work efficiently, they do so in different ways. The HSPT is known for its exceptionally fast pacing, with students often having well under a minute, and sometimes only seconds, to answer each question. The ISEE generally provides more time per question for students, while the PreACT 9 falls somewhere in between depending on the section. The English section of the PreACT 9 is particularly fast-paced, while the Math, Reading, and Science sections allow students slightly more time to analyze each problem.
Families should also keep in mind that preparing for one exam does not automatically prepare a student for another. A student applying to CPS selective enrollment high schools and Catholic high schools will likely need to prepare for both the PreACT 9 and the HSPT. Likewise, students applying to independent schools will still need to take the ISEE, even if they are also applying to selective enrollment high schools. However, preparation is far from independent. Improving reading comprehension, strengthening math skills, developing vocabulary, mastering grammar, and learning effective pacing strategies all benefit students across multiple exams.
Overall each exam is designed for a different school system. Students applying to multiple types of schools will need to take more than one exam, which is why it is important for families to understand which test each school requires and what differentiates them before beginning the admissions process. Though there is some overlap in terms of content, preparing for these exams presents different challenges. Test Prep Chicago can help your student prepare for any combination of exams that they plan to take. With the end of the school year just around the corner, now is the right time to get started! Parents can view our 8th-Grade HSEE Prep course offerings for the summer here and our one-day workshops for HSEE Prep here. Students can also sign up for individual tutoring for any combination of HSEEs here.