When Riverside Elementary moved its library hours from after school to the first thirty minutes of the morning, the change was meant to help working parents, who could now drop their children off early. The checkout records tell a fuller story. In the first semester, the number of books checked out rose by nearly a third, and the biggest increase came from students in the upper grades, who had rarely visited the library before. Teachers noticed that many of these students arrived in class already reading.
Which of the following best states the main idea of the passage?
Moving the library hours to the morning had a benefit beyond the one it was planned for. The passage starts with the reason for the change (helping parents), then turns to what the records showed: more checkouts, mostly from older students who hadn’t used the library before. The point is that the change did more good than planned.
When Riverside Elementary moved its library hours from after school to the first thirty minutes of the morning, the change was meant to help working parents, who could now drop their children off early. The checkout records tell a fuller story. In the first semester, the number of books checked out rose by nearly a third, and the biggest increase came from students in the upper grades, who had rarely visited the library before. Teachers noticed that many of these students arrived in class already reading.
Which of the following conclusions is best supported by the passage?
For some students, the morning hours made the library easier to use than the after-school hours had. Older students who had rarely visited the library started checking out books once it opened in the morning. The most reasonable conclusion is that the new time suited them better than the old one did.
The committee’s report was deliberately terse: two pages, no charts, and only the three recommendations the board had asked for.
As used in this sentence, the word “terse” most nearly means:
brief and to the point The words after the colon explain “terse”: only two pages, no charts, nothing beyond what was asked. That describes something short and focused.
A teacher wants to find every page in a 400-page reading handbook that mentions “phonemic awareness.” Which part of the book is the quickest place to look?
The index An index lists topics and terms in alphabetical order with the page numbers where each one appears. It’s built for exactly this kind of search.
(1) The city opened its first public swimming pool in 1931. (2) Today the pool serves more than 40,000 swimmers each summer. (3) It is the most important building in the neighborhood. (4) Its original tile mural was restored in 2019.
Which sentence states an opinion rather than a fact?
Sentence 3 “The most important building” is a judgment. People could reasonably disagree about it, and there’s no record you could check to prove it. The other sentences give dates and numbers that could be looked up.
A principal argues: “Students who eat breakfast at school score higher on morning quizzes than students who don’t. So our free breakfast program is raising quiz scores.”
Which of the following, if true, would most weaken the principal’s argument?
Students who eat breakfast at school also arrive early and get extra review time with teachers before the quizzes. The principal assumes breakfast causes the higher scores. If the same students also get extra review time, that could explain the scores instead. A second possible cause weakens a cause-and-effect claim.
Some critics call the new science standards too demanding. Yet the same critics said that about the reading standards ten years ago, and those standards are now taken for granted. Ambitious goals have a way of looking reasonable once students begin meeting them.
Which of the following best describes the author’s attitude toward the new science standards?
It is confident they will prove workable. The author answers the critics by pointing to the reading standards, which once looked too hard and are now normal. The last sentence says ambitious goals start to look reasonable once students meet them. That’s a confident, supportive view.
On five quizzes, a student scored 72, 90, 85, 88 and 80. What is the student’s mean (average) score?
83 Add the scores: 72 + 90 + 85 + 88 + 80 = 415. Divide by the number of quizzes: 415 ÷ 5 = 83.
A classroom bulletin board is 8 feet wide and 4 feet tall. Border trim comes in rolls that are each 36 inches long. How many rolls are needed to go once around all four edges of the board?
8 rolls The distance around the board (the perimeter) is 8 + 4 + 8 + 4 = 24 feet. Each roll is 36 inches, which is 3 feet. 24 ÷ 3 = 8 rolls.
A bag holds 6 red, 4 blue and 10 green counters. A student takes one counter without looking. What is the probability that it’s blue?
1/5 There are 6 + 4 + 10 = 20 counters, and 4 of them are blue. The probability is 4/20, which simplifies to 1/5.
A teacher orders 3 packs of markers at $4.75 per pack and 2 boxes of paper at $12.50 per box. Shipping is a flat $6.00 for the whole order. What is the total cost?
$45.25 Markers: 3 × $4.75 = $14.25. Paper: 2 × $12.50 = $25.00. Add shipping once: $14.25 + $25.00 + $6.00 = $45.25.
A school had 480 students last year and 528 students this year. By what percent did enrollment increase?
10% The increase is 528 − 480 = 48 students. Percent change compares the increase with the starting number: 48 ÷ 480 = 0.10, which is 10%.
A class has $150 for a field trip. The bus costs $90, and each student entry ticket costs $4. What is the greatest number of tickets the class can buy with the money left after paying for the bus?
15 After the bus, $150 − $90 = $60 is left. Each ticket is $4, so $60 ÷ $4 = 15 tickets.
A class art project uses 3/4 cup of glue for each batch. How much glue is needed for 2 1/2 batches?
1 7/8 cups Multiply: 3/4 × 2 1/2 = 3/4 × 5/2 = 15/8. As a mixed number, 15/8 is 1 7/8 cups.
Which of the following numbers is between 2/5 and 1/2?
0.45 As decimals, 2/5 = 0.4 and 1/2 = 0.5. The only choice between 0.4 and 0.5 is 0.45.
At a school, every student is placed in exactly one group, Group A or Group B. The rule is: “All students who pass the reading screener are placed in Group A.” Maria is in Group B.
Which of the following must be true?
Maria did not pass the reading screener. If Maria had passed, the rule would have put her in Group A. She’s in Group B, and a student can be in only one group, so she can’t have passed.
A writer is answering this essay prompt: “Should high schools require community service for graduation? Take a position and support it.” Which sentence would make the clearest central idea (thesis) for the essay?
Requiring community service would help students by connecting what they learn in class to real problems in their own town. A clear thesis takes a position and gives a reason the essay can develop. This one says yes, it should be required, and why. CBEST scorers look for a central idea that is clearly stated and kept in focus.
Which of the following sentences is punctuated correctly?
When the bell rang, the students lined up quietly. “When the bell rang” is an introductory clause that can’t stand on its own. A comma goes after it, before the main clause “the students lined up quietly.”
A writer’s paragraph begins: “Small classes help children who are just learning to read.” Which sentence would best support this claim?
In my second-grade class of fifteen, our teacher could hear each of us read aloud every day and fix mistakes right away. This sentence gives a specific example that shows how a small class helped beginning readers: daily reading aloud and quick correction. CBEST scorers reward support that is relevant, specific and detailed.
Which word or phrase best fills the blank?
“The first plan was cheaper. ______, it would have taken two years to finish, so the board chose the second plan.”
However The second sentence gives a drawback that works against the first plan’s advantage. “However” signals that kind of contrast.