The NBCOT OTR exam has 180 questions, and the NBCOT COTA exam has 190 questions. You get four hours for either exam, and any break you take comes out of those same four hours.
Below you will find what kinds of questions make up those totals, why some of them do not count toward your score, and how to pace yourself so the clock does not surprise you.
NBCOT question count at a glance
Figures are from nbcot.org as of November 2026. Check them again on nbcot.org before your test date.
| Detail | OTR exam | COTA exam |
|---|---|---|
| Total items | 180 | 190 |
| Testing time | 4 hours | 4 hours |
| Scheduled breaks | None; clock keeps running | None; clock keeps running |
| Single-response items (3 or 4 options) | Yes | Yes |
| Six-option multi-select (choose 3) | Yes, inside scenario sets | Yes, as standalone items |
| Scenario sets | Yes | No |
| CSTs | No, replaced January 2, 2024 | No |
Is the NBCOT exam all multiple choice?
Every item asks you to pick from a list of options, but some items have three right answers instead of one. Both exams mix two item types, and you should practice both before test day. When you review a practice question, read why each option is right or wrong. Every question in the Typical Prep NBCOT question bank explains each answer choice for this reason.
OTR item types
Single-response items give you three or four options, and you choose the one best answer.
Scenario sets start with an opening scene that describes a client and a practice setting. Four items follow, all based on that same scene. Each item has six options, and three of them are correct. You select the three best.
The scenario sets are mixed in with the single-response items, and NBCOT does not publish how many sets appear on each exam. For a full walk through with a practice example, read NBCOT Scenario Sets Explained.
COTA item types
The COTA exam uses single-response items with three or four options, the same as the OTR exam. It also uses six-option multi-select items where you choose three. On the COTA exam, each multi-select item stands on its own with its own short stem, so there is no shared scene to track across four items.
On both exams, some items include a picture or a chart.
What happened to CSTs?
If an older prep book told you to expect clinical simulation test (CST) items, that advice is out of date. On January 2, 2024, NBCOT replaced CSTs on the OTR exam with scenario sets and set the exam at 180 items. The COTA item types did not change. Our post Are CSTs Still on the NBCOT Exam? covers what to do with old study materials.
Do all 180 or 190 questions count?
No. Each exam includes unscored field-test items. These are new questions NBCOT is trying out for future exams. They are placed at random, and you cannot tell them apart from the scored items.
NBCOT does not publish how many field-test items are on each exam, so you cannot count on a set number of free questions. Treat every item as if it counts. Trying to guess which ones are experimental only burns time you need for the rest.
Can you skip questions and come back?
Yes. On both exams you can flag an item, move on, and return to it later. You can change any answer until time runs out or you submit. That includes the items inside a scenario set.
If time runs out, NBCOT submits whatever you have selected. A flagged item with no answer earns no credit. On multi-select items, you earn credit for each correct option you choose, and wrong choices do not cost you points. So before time is up, make sure every item has an answer, and every multi-select item has three choices.
NBCOT pacing table
Four hours sounds like a lot until you divide it by close to 200 questions. The table below shows the math for each exam if you use the full four hours and take no breaks.
| Pacing measure | OTR (180 items) | COTA (190 items) |
|---|---|---|
| Total minutes | 240 | 240 |
| Seconds per item | About 80 | About 76 |
| Items per hour to finish on time | 45 | About 48 |
| Where to be at the 2-hour mark | About item 90 | About item 95 |
| Where to be at the 3-hour mark | About item 135 | About item 143 |
The per-question times are our own arithmetic from the item counts and the four-hour limit. NBCOT does not publish a target pace.
A few notes on using this table.
Breaks shorten your time per question. If you take a 10-minute break, you have 230 minutes left. That drops your pace to about 77 seconds per item on the OTR exam and about 73 seconds on the COTA exam.
Scenario sets take time up front. On the OTR exam, you spend time reading the opening scene before you answer the first of its four items. Build that reading time into your pace when you take timed practice.
Pick a few checkpoints, such as once an hour, instead of checking the clock after every item. Try them on a full-length timed exam in the Typical Prep question bank so you know they work for you before test day.
How long is the whole appointment?
Plan for about four hours and 45 minutes at the test center. The extra time covers check-in and an optional tutorial, and the tutorial does not come out of your four hours. If you take a break, you must stay in the building and go through the entry checks again when you come back, and that time does come out of your exam clock.
If you have approved testing accommodations, your time limit and break rules may be different. Follow the details in your approval notice and ATT.
What the questions test
The question count is only half the picture. The other half is what those questions cover. Each exam follows its own content outline, and each domain carries a set share of the items. On the OTR exam, interventions make up 38 percent. On the COTA exam, interventions make up 55 percent.
That means you need to know what to do for a client with each common condition. To build that knowledge one topic at a time, watch the matching lecture in the NBCOT Explained video course or read the topic in the Occupational Therapy Essentials book, then answer a short set of practice questions on it.
For the OTR breakdown, read NBCOT OTR Exam Content Outline and Domain Weights. For format, scoring, fees, and scheduling in one place, start with our NBCOT Exam Guide for OTR and COTA Candidates.
Practice at real exam pace
Knowing the count is the easy part. Answering 180 or 190 items in four hours without fading in the last hour takes practice. Take timed blocks during your prep, and take at least one full-length timed exam before test day so you know how your pace and focus hold up.
The Typical Prep NBCOT question bank has 1,900+ questions with an explanation for every answer choice, and you can build timed practice exams from it. Typical Prep also offers the NBCOT Explained video course and the Occupational Therapy Essentials book, so you can review a topic before you practice it.
Frequently asked questions
How many questions are on the NBCOT OTR exam?
The OTR exam has 180 items, and you get four hours to finish. Some of those items are unscored field-test questions, and NBCOT does not say how many.
How many questions are on the COTA exam?
The COTA exam has 190 items in four hours. It uses single-response items and standalone six-option multi-select items.
How long is the NBCOT exam?
Both the OTR and COTA exams allow four hours of testing time. Plan for about four hours and 45 minutes at the test center, including check-in and the optional tutorial.
Are there scheduled breaks on the NBCOT exam?
No. You can take a break whenever you need one, but the exam clock keeps running while you are away.
How many seconds do you get per NBCOT question?
About 80 seconds per item on the OTR exam and about 76 seconds on the COTA exam, if you take no breaks. Any break time lowers those numbers.