How Flashy works
Every Flashy PSAT and SAT practice question belongs to a skill and a question type, and has one of 7 difficulty levels. Every answer choice is explained, and every wrong choice comes from a real mistake.
Flashy tracks each question type inside a skill. That lets it see which kinds of problems your student has down and which still trip them up, inside one skill. This page shows one skill, Percentages, from the inside.
Flashy is free PSAT and SAT practice that adapts to each student. Its questions are its own, written with AI and checked before your student sees them. They match each test’s published skills and difficulty, and they are not official College Board questions.
Across the PSAT 8/9, PSAT 10, PSAT/NMSQT and SAT, every question is sorted three layers deep: skill, then sub-skill, then question type.
A skill is a topic like Percentages; the College Board groups skills into broader content areas on its score reports. A sub-skill is a part of a skill, like percent increase and decrease. A question type is one kind of problem inside that, like undoing a discount to find the original price.
Percentages is a Math skill on all three tests. It has 3 sub-skills and 9 question types. Each example below is a shortened version of one of Flashy’s own questions.
Every question has one of 7 difficulty levels. The scale is the same on every test, so level 4 means the same thing for a PSAT 8/9 student as for an SAT student. Flashy uses your student’s level on each skill to choose their next questions.
Level 1
“What is 50% of 88?”
Level 7
“A table shows a store’s sales. The share from online orders rose from 30% to 45%. How many more dollars came from online orders?”
Both ask for a percent of a total. At level 7 the student has to read a table, take two percents and compare them. Some question types only show up at the higher levels.
On every multiple-choice question, the explanation goes through each choice. Each wrong choice is built from a specific mistake, and Flashy knows which mistake it stands for.
From a Flashy question, shortened
Of 75 students surveyed, 18 chose pizza as their favorite lunch. What percent of the students chose pizza?
A wrong pick then tells your student something specific: they forgot to divide, or divided the wrong way round.
Flashy tracks how your student does on each question type inside a skill, not just the skill as a whole. A student can be strong at finding a percent of a number and still miss questions that undo a discount. As a parent, you can open a skill to see its question types, level by level.
When your student goes over a missed question with Spark, Flashy’s AI learning companion, Spark sees which answer they chose and why each wrong choice tempts. It asks what they tried, then helps find where it went wrong.
Then your student answers one more like it on their own: the same question type, a new question, and when possible, wrong choices that set the same trap they fell into.
Questions are written with AI, which is what makes a bank this deep possible: about 19,000 questions across 7 difficulty levels, so practice can adapt to one student, skill by skill. Before a question reaches your student, it is checked.
Every question lists the tests whose topics it covers, so a PSAT 8/9 student never sees SAT-only topics like circles.
Every multiple-choice question explains every choice, and every question has a step-by-step explanation.
Every graph, table and diagram has a text description, so a screen reader can read it aloud.
Most questions were also reviewed one at a time, for the explanation, the skill and any figure, and compared with earlier questions on the same skill to catch near-repeats.
A question that fails a check is rewritten or held back.
No process catches every problem. So any practice question can be reported from its menu, with “Report this question.”
The question comes out of your student’s practice right away. It is reviewed, and your student gets a written reply inside Flashy. When a fix is needed, the reply says it is fixed only once the fix is live.
PSAT and SAT are College Board trademarks. Flashy is independent and not endorsed by the College Board.
Full-length official practice tests in the College Board’s free Bluebook app are the best rehearsal for test day: the real format, the real timing.
Flashy adds the daily part: practice by question type at your student’s level, with every answer choice explained. Use both. See the College Board’s free practice in Bluebook.
PSAT or SAT questions matched to their test. Difficulty adapts over time to their answers, skill by skill. You choose 5 to 120 minutes a day.
A step-by-step explanation follows every question, so a mistake turns into something they understand.
Spark, Flashy’s AI learning companion, goes over a question they missed or marked, explains an idea they never learned, or teaches a short lesson built from their gaps.
Your student opens the question with Spark. Spark asks what they tried, then talks through where it went wrong, one step at a time. Then Spark gives them one more question like it, and they solve that one on their own.
Working through a missed question with Spark uses the plan’s monthly time to Study with Spark. Practice and step-by-step explanations stay open after it runs out, and the time refills the next month.
No credit card needed to start. See full pricing.
A sample Flashy question · Math · Linear functions
A monthly phone plan is modeled by a linear function D(g), where D(g) is the total monthly bill, in dollars, when the customer uses g gigabytes of data. A customer who uses 4 GB pays $52, and a customer who uses 9 GB pays $77. Which of the following defines D?
Answer: B
The slope is a = (77 − 52)/(9 − 4) = 25/5 = 5 dollars per GB. Using D(4) = 52: 52 = 5(4) + b, so b = 52 − 20 = 32. Therefore D(g) = 5g + 32.
Choice B is correct.
Choice A is incorrect — (D(g) = 5g + 52) uses the y-coordinate of the first data point as the y-intercept; the student wrote b = 52 because D(4) = 52, without subtracting 5 × 4 from it.
Choice C is incorrect — (D(g) = 25g + 32) reads the rise D(9) − D(4) = 25 as the slope without dividing by the run; the student computed the difference of the dollar amounts but forgot to divide by the difference of the GB inputs.
Choice D is incorrect — (D(g) = 5g − 32) flips the sign of the y-intercept; the student computed 52 − 5(4) = 32 but wrote the result with the wrong sign in the function rule.
Yes. They are written with AI, then checked: every question is matched to the tests whose topics it covers, every figure has a text description, and most questions were also reviewed one at a time and checked for near-repeats. A question that fails a check is rewritten or held back. AI can still make mistakes, so every question can be reported from inside the app.
Yes. Every question comes with a step-by-step explanation. On multiple-choice questions, the explanation goes through every choice: why the right one is right and why each wrong one is wrong.
Each question has one of 7 difficulty levels, and each skill runs from easy to hard. Flashy uses your student’s level on each skill to choose their next questions, so practice starts where they are and steps up as they show what they can do.
No. They are Flashy’s own practice questions, written to match each test’s published skills and difficulty. They are not official College Board questions. For official practice tests, use the College Board’s free Bluebook app.
The question comes out of their practice right away. Then it is reviewed, and your student gets a written reply inside Flashy. If it needed a fix, the reply says so once the fix is live.
Ready when you are
Daily practice, explanations and progress are free for every student. Free also includes 30 minutes a month to Study with Spark, Flashy’s AI learning companion. No credit card needed.
