Praxis Core Reading Key Ideas and Details

Content category I of the Core Academic Skills for Educators: Reading (5713): about 17–22 of the 56 questions (35%). The topics ETS lists, how they are tested and practice questions with explanations.

56 questions on the real 85-minute clock, weighted like the ETS test, with a score by content category and an explanation for every answer.

Or start the free Key Ideas and Details drill

What ETS lists

  • Main idea and primary purpose
  • Supporting ideas
  • Inferences

From the ETS Core Academic Skills for Educators: Reading (5713) Study Companion, content category I.

Line drawing of an open book, a folded newspaper and a magnifying glass

How Key Ideas and Details is tested

Questions ask for the main idea or primary purpose of a passage, a supporting detail the passage states, or what can be inferred from it. Every answer is in the passage; the wrong choices are often true-sounding statements the passage never makes.

Praxis Core Reading Key Ideas and Details practice questions

Answer each question, then open the explanation.

Question 1

Passage: The Question Margin

In Ms. Nwosu's classroom, students kept a narrow margin beside their reading notes for questions that occurred to them. At first, many filled the space with questions whose answers appeared in the next sentence. Others left it blank because they thought a question exposed a failure to understand. Nwosu did not reward the number of questions. Instead, she occasionally shared one of her own, showing how a puzzling detail could lead her back to an earlier paragraph. Over time, students began recording uncertainties that extended across several pages. One student wondered why a narrator described the same room differently on two visits. Another asked whether a report's conclusion depended on a survey that omitted evening workers. Nwosu used these questions to plan small-group discussions, but she kept some questions unresolved when the text offered insufficient evidence. The notebooks were not a complete measure of reading skill. Some students explained complex ideas aloud while writing little in the margin, and others needed help expressing a question clearly. Still, the margins revealed aspects of reading that a summary alone could hide. They showed where readers noticed a tension, tested an assumption, or recognized the boundary between what a text stated and what they wanted to know.

Why did Nwosu share her own reading questions?

  1. A.To establish that teachers find all texts confusing
  2. B.To discourage students from revisiting earlier paragraphs
  3. C.To provide answers students could copy into their margins
  4. D.To make every student ask the same question
  5. E.To model questioning as part of thoughtful reading
Show the answer and explanation

Answer: E: To model questioning as part of thoughtful reading

Students initially associate questions with failure, and Nwosu models using a question to revisit the text. Her example presents uncertainty as a productive part of reading.

Question 2

Statement: Different Book Lists

A reading group maintains two lists: books members enjoyed and books that produced sustained discussion. Some titles appear on both. The organizer keeps the lists separate because an enjoyable reading experience and a productive discussion are different reasons for recommending a book.

Which statement best expresses the passage’s main idea?

  1. A.Members must agree about every book before listing it.
  2. B.The organizer wants to replace enjoyment with a single standard.
  3. C.Books that members enjoy cannot generate serious discussion.
  4. D.The two lists contain identical recommendations.
  5. E.Two lists distinguish two grounds for recommendation.
Show the answer and explanation

Answer: E: Two lists distinguish two grounds for recommendation.

The organizer distinguishes enjoyment from sustained discussion while allowing overlap. Keeping separate lists communicates those different recommendation purposes.

Question 3

Paired passages: What a Group Grade Measures

Passage 1 In my design course, each team submits a working model and receives one shared grade for that model. I assess individual explanations separately. The shared grade makes a point that a collection of individual marks cannot: a design must work as a whole. A beautifully built component does not rescue a model whose parts do not fit. Students therefore have a reason to check connections, discuss changes, and help solve problems beyond their assigned pieces. Some students contribute more than others, but the model grade measures the quality of the joint product, not the amount of effort each person claims to have supplied. Passage 2 A model must work as a whole, and students should learn to coordinate their contributions. Still, I would replace the shared model grade with individual grades based on documented decisions and demonstrated understanding. A finished model cannot show who recognized a problem or who could explain the final solution. Separate explanation grades help, but the shared mark still attaches the same judgment to students whose contributions differ. Teams can receive common feedback about the model's performance without receiving a common score. In my view, grades should communicate what each student has shown, while feedback can recognize the quality of the team's product.

What does the author of Passage 1 say the shared model grade measures?

  1. A.Each student’s separate explanation
  2. B.The team’s agreement about how to divide work
  3. C.The number of components each student builds
  4. D.The quality of the joint product
  5. E.The amount of effort each student reports
Show the answer and explanation

Answer: D: The quality of the joint product

Passage 1 explicitly defines the model grade as a measure of the joint product. Individual explanations receive a separate assessment.

Question 4

Passage: The Missing Streets

An old railway map marks the station, freight yards, and connecting tracks with great precision, while several nearby residential streets appear only as faint outlines. A local historian initially planned to use it to show the town's population pattern. On reading the map's heading, she found that it had been prepared for freight routing, not a census. She still used it in her exhibit, but to explain transport connections. A separate neighborhood directory supplied information about households. The map's uneven detail became understandable once its intended task was identified; blank areas could not simply be read as empty land.

Which statement best expresses the passage’s main idea?

  1. A.A source loses all value when its first proposed use is unsuitable.
  2. B.Directories can establish exact railway routes.
  3. C.Precisely drawn maps are suitable for every historical question.
  4. D.Residential streets did not exist near the railway.
  5. E.A source’s purpose limits what its omissions establish.
Show the answer and explanation

Answer: E: A source’s purpose limits what its omissions establish.

The freight-routing purpose explains the map’s detailed tracks and faint streets. The historian changes its use rather than treating its omissions as population evidence.

Take the full test under the real clock

56 questions on the real 85-minute clock, weighted like the ETS test, with a score by content category and an explanation for every answer.

Or start the free Key Ideas and Details drill

Common questions

How many Key Ideas and Details questions are on the Praxis Core Reading?

ETS lists about 17–22 of the 56 questions in Key Ideas and Details, about 35% of the test.

What does Key Ideas and Details cover on the Praxis Core Reading?

Main idea and primary purpose; Supporting ideas; Inferences.

How should I study Key Ideas and Details for the Praxis Core Reading?

Questions ask for the main idea or primary purpose of a passage, a supporting detail the passage states, or what can be inferred from it. Every answer is in the passage; the wrong choices are often true-sounding statements the passage never makes.

Praxis is a registered trademark of ETS. Original independent practice questions written to the published ETS Study Companions; not affiliated with or endorsed by ETS.