OST Grade 3 Math exam-day guide
OST Grade 3 Math · Prepare for the day ahead.
Your checklist
Photo ID for the parent or guardian
Many test providers ask the adult present to show government-issued photo identification at check-in. Confirm with the provider which ID is accepted and whether the student needs any identification of their own.
Admission ticket or registration confirmation
Bring a printed or saved copy of the registration confirmation showing the student's name, test site, and testing window. Confirm with the provider whether a printed copy is required or a digital copy is accepted.
Number 2 pencils and an eraser
Bring several sharpened number 2 pencils and a soft eraser. If the test is delivered on a computer, paper and pencil may still be provided or permitted for scratch work; confirm with the provider what is allowed at the student's site.
Scratch paper and a simple ruler
Grade 3 math often includes measurement and geometry items, and scratch paper helps with multi-step word problems. Confirm with the provider whether scratch paper and a ruler are supplied at the site or must be brought, since some sites prohibit outside materials.
No calculator
Grade 3 math tests generally assume the student computes mentally or on paper. Do not send a calculator, phone calculator app, or smartwatch into the testing area unless the provider explicitly permits an accommodation.
Quiet, comfortable clothing in layers
Testing rooms vary in temperature, and a light layer keeps the student comfortable without distraction. Avoid clothing with slogans or images that could draw attention.
Water and a light snack for after the test
Food and drink are usually not allowed at the desk during testing. Plan a snack and water for the break or for after the session, and confirm with the provider whether any snack is permitted during breaks.
Arrival time and site directions checked the day before
Confirm the exact arrival time, building entrance, and parking or drop-off plan with the provider. Arriving early reduces stress and avoids forfeiting time on the test.
Approved accommodations confirmed in advance
If the student receives extended time, a separate setting, a scribe, or read-aloud support, confirm with the provider that these are documented and scheduled. Accommodations are usually arranged before test day and cannot be added at check-in.
A calm, early bedtime the night before
Sleep matters more than one last practice set. Aim for the student's normal bedtime and avoid cramming new content the night before the test.
A short review of test-taking steps, not new content
The morning of the test, review simple routines: read each question twice, show work, check answers, and flag hard items to return to. Do not introduce new math concepts on test day.
Contact information for the test site
Save the provider's phone number and the site contact in case of illness, a late arrival, or a schedule change. Confirm with the provider how same-day changes are handled.
Plan the day
Re-read the registration confirmation and verify the test date, arrival time, site address, and any accommodations. Confirm with the provider whether the test is on paper or on a computer, whether scratch paper and pencils are supplied, and what the student may bring into the room. Gather the ID, confirmation, and pencils in one bag so nothing is hunted for on test morning.
Spend short sessions on the four Grade 3 math domains: operations and algebraic thinking (multiplication and division facts, word problems), number and operations in base ten (place value, multi-digit addition and subtraction), number and operations with fractions (unit fractions, comparing simple fractions, equivalent fractions on a number line), and measurement and data plus geometry (area, perimeter, telling time, reading graphs, and shapes). Practice explaining reasoning aloud, because many items ask students to show or describe how they got an answer.
Have the student answer a few mixed questions under quiet conditions and practice the routine: read the whole question, underline what is asked, show work, and check the answer against the question. Practice skipping a hard item and returning to it. Keep sessions to 15 to 20 minutes so the student stays fresh.
Pack the bag with ID, confirmation, pencils, eraser, and any permitted materials. Lay out clothing. Confirm the wake-up time and the route to the site. Avoid heavy practice or new topics; a brief, confidence-building review of multiplication facts or a favorite skill is enough. Set out a water bottle and snack for after the test.
Explain plainly what will happen: where they will sit, how long the test takes, and that some questions may be hard for everyone. Remind the student that skipping and returning to a question is allowed and that guessing is better than leaving blanks unless the provider says otherwise. Confirm with the provider whether there is a penalty for wrong answers, though Grade 3 tests typically have none.
Eat a normal breakfast and arrive at the site with time to spare. Leave phones and smartwatches with the parent or guardian unless the provider permits them. Keep the car ride calm and avoid last-minute quizzing. At check-in, have the ID and confirmation ready.
Read each question twice and restate what it asks. Show work on scratch paper, especially for multi-step word problems. For multiplication and division, use known facts and skip counting. For fractions, draw or use a number line. For area and perimeter, label the sides before computing. Check that the answer matches the question before moving on.
Answer the easier questions first and mark hard ones to return to. Do not spend too long on one item. If time remains, go back to flagged questions and check arithmetic. Use any breaks the provider allows to stand, stretch, and drink water, then return ready to focus.
Rules to check
Follow the provider's identification policy exactly. Confirm with the provider which documents are required and whose ID must be shown at check-in, since policies differ by site and program.
Bring only permitted materials into the testing room. Confirm with the provider whether scratch paper, rulers, or pencils are supplied and whether personal items, phones, and smartwatches must be stored outside the room.
Calculators are generally not permitted on Grade 3 math tests. Confirm with the provider before bringing any device, and request an accommodation in advance if one is needed.
Breaks are set by the provider and may be scheduled rather than taken on demand. Confirm with the provider how breaks work and whether a snack or water is allowed during them.
Arrive at the scheduled time. Confirm with the provider what happens if the student is late or absent, including whether make-up testing is offered and how it is requested.
Report any testing irregularity, illness, or disruption to the test administrator immediately rather than after leaving the site.
Scoring is based on the student's independent work. Do not help with answers during the test, and confirm with the provider how results are reported and when they will be available.
Accommodations must be requested and approved before test day. Confirm with the provider that any documented accommodation is scheduled and that the site is prepared to provide it.