ACT® · Science: The Section, the Clock, and the Optional Decision
The Enhanced Blueprint: 40 Items, 34 Scored, 6 Passages
A Science form has 40 questions but only 34 count. The other 6 are unscored field-test items hidden among six passages: 2 Data Representation, 3 Research Summaries, 1 Conflicting Viewpoints.
Every Science form looks the same on the surface: 40 questions, 40 minutes, no calculator. But only 34 of those questions are scored. The other 6 are embedded field-test items, slipped in to try out future questions on real test-takers. Nothing in the booklet flags which six they are, so the only sane approach is to treat every question as if it counts. This setup replaced an older stand-alone experimental section, folding the field testing invisibly into the section everyone already takes.
The 34 scored items are not spread evenly. They split by question type into roughly 13 to 17 data representation questions, 6 to 11 research summaries investigation questions, and 8 to 13 conflicting viewpoints argument questions. They are also carried by six passages with a fixed shape: 2 Data Representation passages, 3 Research Summaries passages, and 1 Conflicting Viewpoints passage. Two of those six passages are guaranteed to be life science, so the content mix is almost as predictable as the question-type mix. If a form gives the Data Representation passages 11 items total and the Conflicting Viewpoints passage 8, the three Research Summaries passages absorb whatever is left of the 34.
This blueprint matters most for pacing and for deciding whether the embedded passage changes anything. Since one extra passage sometimes rides along as an unscored life science field-test passage, a student might see three life science passages instead of two. That extra passage does not change the scored structure at all. It just adds reading without adding points, which is exactly why treating every passage as real stays the safer bet.
Key terms
- Field-test item
- An unscored question trialled on a real form to gather data for future tests, indistinguishable from scored items.
- Data Representation
- A passage type presenting charts, tables, or graphs, asking students to read and interpret given data.
- Research Summaries
- A passage type describing one or more experiments, asking about design, variables, and results.
- Conflicting Viewpoints
- A passage type presenting two or more scientists' differing explanations for the same phenomenon.
Watch it explained
- How it worksHow do 2 Data Representation, 3 Research Summaries and 1 Conflicting Viewpoints passage fill a single Science form?
- How it worksWalk me through how 34 scored Science items split into 13-17 data, 6-11 investigation and 8-13 argument questions.
- Worked exampleFind how many items the three Research Summaries passages carry when a form allots them 16 to 20 of its 34.
- Going furtherWhat changes on a Science form when the embedded field-test passage happens to be a third life science passage?
Check yourself
End of topic.