Merit Lab · Study guide

SAT practice that starts with one skill

Merit Lab provides original SAT Reading and Writing and Math practice, explanations, guides, and short study sessions. Use it to work on a specific skill, then check how that skill transfers to official practice.

Open the practice beta · Read the coverage and limitations

A practical study cycle

  1. Find a starting point. Try the Quick 16 or Deeper 32 practice assessment in Merit Lab. Its estimate is provisional practice guidance, not an official SAT result.
  2. Choose a narrow skill. Work through a short set. Before checking the answer, write down the evidence or calculation that supports your choice.
  3. Explain the miss. Separate a concept gap from a reading error or arithmetic slip. Read the rationale and guide; redo the reasoning without looking at the answer.
  4. Try a fresh problem. A correct repeat can reflect memory. A new problem helps you check whether you can apply the same idea.
  5. Rehearse the official format. Use College Board's Bluebook practice tests. Compare the skills you missed with your practice plan.

Example: percentage change

A price rises from $80 to $100. What is the percentage increase?

The increase is $20. Divide that change by the original price: 20 ÷ 80 = 0.25, or 25%. Dividing by the new price gives 20%, which answers a different question. The denominator must match the starting amount.

Now try the same idea with a decrease from $100 to $80. The decrease is $20 ÷ $100 = 20%. Equal dollar changes do not imply equal percentage changes because the starting amounts differ.

What is covered?

SAT practice spans the eight Reading and Writing and Math domains: Information and Ideas, Craft and Structure, Expression of Ideas, Standard English Conventions, Algebra, Advanced Math, Problem Solving and Data Analysis, and Geometry and Trigonometry. This beta is a supplemental practice tool. It does not establish complete exam coverage, calibrated score predictions, or an expected score improvement.

Official resources