911 Dispatcher Test: What's On It and Which One You'll Take

There is no single 911 dispatcher test. In the United States dispatchers are hired by thousands of separate agencies, and each one chooses how to test its applicants. In practice most candidates meet one of three instruments — CritiCall, National Testing Network's ECOMM exam, or, in California, the POST dispatcher test — or a test the agency has built itself, usually alongside a separate typing test. This guide compares the main tests, shows you how to work out which one you will sit, and walks through every common question type with an original example.

If you want to try questions straight away, our 911 dispatcher practice questions have answers and explanations, and free practice has timed typing and data entry drills with no account.

The main 911 dispatcher tests compared

	CritiCall	NTN ECOMM	California POST
Publisher	Biddle Consulting Group	Ergometrics, delivered by National Testing Network	California Commission on POST
Who books it	The hiring agency invites you	You book it through NTN	The hiring agency
Format	Computer, with audio through a headset	Video or written tests, plus computer simulations	Paper booklet and answer sheet, with audio tests
What is on it	Agency picks from over 20 tests: data entry, keyboarding, multitasking, memory, maps, reading and more	Call-taker judgment, note-taking, dispatcher multitasking; data entry in the Express version	Eleven fixed tests of verbal, reasoning, memory and perceptual ability
How long	One to three hours on average	About two hours	About 2½ to 3 hours
Guessing	Skipped questions penalized unless told otherwise	No penalty for guessing	Wrong answers cost a fraction of a point
Score goes to	The agency that tested you	Every department you choose	The agency that tested you
Passing score	Set by each agency	Set by each department	Set by each agency; POST recommends 48 to 57 on its T-score scale

Each of those has its own full guide: the CritiCall test, the NTN ECOMM test and the POST dispatcher test. You may also see other names, such as the National Dispatcher Selection Test (NDST), which is a separate product from a different publisher, or an agency's own written exam.

The biggest difference is how the test is delivered

The skills these tests measure overlap heavily, so the sharpest practical difference is logistics: who schedules you, who pays and what one sitting is worth.

With CritiCall and the POST test, the hiring agency tests you and the result belongs to that hiring process. Apply to five agencies that use them and you may sit five tests (CritiCall can be run online or on site, depending on the agency). With ECOMM, you register with National Testing Network, choose your departments, pay and book your own sitting, and NTN sends your score to every department you selected. One afternoon can support several applications — which also means one bad sitting costs more, so do not book it early "just to see."

The content differs too. A CritiCall battery is assembled by the agency from a catalog, so no forum post can tell you exactly what yours contains. ECOMM comes in two fixed versions, and the POST test is the same eleven tests for everyone, so you can prepare against a known list.

How to tell which test you will take

You rarely have to guess. The job posting usually tells you, if you read it as instructions rather than a description.

• Look at where it sends you to test. "Register with National Testing Network" or a link to an NTN job listing means ECOMM. An instruction to wait for the agency to contact you with a test date points to an agency-run test such as CritiCall or POST.
• Look for a fee. A testing fee you pay yourself is a strong sign of NTN. Agency-run tests usually say nothing about a fee because there is not one.
• Look for named components. Mentions of data entry in keystrokes per hour, multitasking or map reading suggest CritiCall. A reference to a T-score, "POST entry-level dispatcher" or a POST score from another agency means the POST test.
• Check the location. California agencies in the POST Public Safety Dispatcher Program must assess the abilities the POST test measures, usually with that test, though POST also accepts other job-related tests.
• Ask. If the posting is silent, email the HR contact and ask which test is used and how testing is scheduled. It is a normal question.

Our guide to reading a dispatcher job posting covers this and the other requirements buried in the same document.

The question types you will meet

Whatever the instrument, the questions fall into a fairly small set of types. The examples below are our own inventions to show the shape of each; no real exam content is reproduced.

Data entry

You are shown or read information and type it into fields, accurately, against the clock. Numbers and mixed letters and digits are where accuracy falls away.

Example: "Reporting party: Maria Alvarez-Quinn, 5528 SW 114th Court, phone 305-555-0173, silver 2016 Honda, plate 8JXK492." You type each value into its field. One transposed digit in the plate or phone number is an error. Prose typing practice does little for this, because prose has almost no digits — structured data entry practice is the fix. Common in CritiCall and the ECOMM Express simulations.

Cross-referencing and checking

You are given a value and a reference list or table, and must find the match or report something from it.

Example: a table lists unit numbers against their status and you are asked the status of Unit 214, with 241 and 124 sitting nearby as distractors. Cross-referencing drills train the scanning pattern. POST's version has you check names, addresses and plates against a "hot sheet" while also listening to radio traffic.

Character comparison

Two strings are shown and you decide whether they are identical.

Example: "1HGCM82633A004352" beside "1HGCM82633A004532." They differ only in a transposed pair near the end. Fast readers lose the most here, because reading fluency silently repairs the very error being tested. Compare in chunks, not as whole strings.

Memory and recall

Information is presented, removed, and then you answer questions about it, sometimes after an unrelated task or from audio you heard once.

Example: you study "male, mid-thirties, red hooded jacket, fled north on foot toward Third Avenue" for a few seconds, complete another item, then are asked which direction he fled. Organizing details into categories as you read is the habit that helps; see memory and recall sections.

Listening and note-taking

You hear or watch a simulated call and either answer from memory or take notes and answer from them. ECOMM's Comprehensive version has you judge statements about video calls as correct, incorrect or unsure using your notes; POST's Call-Taking and Oral Directions tests allow notes, while its Recalling Facts & Details test does not.

Example: a caller says she is at a gas station on Elm, then corrects herself to the one on Oak at Fourth. A later question asks where the caller is. Notes that record location first and keep corrections next to the original answer it.

Rules-based decisions and priorities

You are given a set of rules and must apply them: which agency to send, which incident comes first, which unit to assign. The rules on the test are what count, not your own sense of how a real center works.

Example: rules say injuries or threats to life come first, property damage second, everything else third. You rank "a man breaking into an empty garage," "two people fighting in a parking lot" and "a caller asking about a lost dog license." Fighting is first, the break-in second, the license question third. POST's Setting Priorities and Assigning Field Units tests and CritiCall's emergency-message decisions work this way; our prioritization drill practices it.

Situational judgment

You see or read a scenario and pick the best response. ECOMM's call-taker test is built on these. Answer from what the scenario tells you and general public-safety sense — people's safety first, getting help moving — rather than a specific agency's procedures, which you will learn in training. See situational judgment and personality tests.

Reading, spelling and sentence clarity

Reading comprehension asks what a short, often procedural passage does and does not say; the trap is an answer that is true in general but not stated. POST adds an Evaluating Facts test where "cannot be determined" is a real answer. Spelling items (CritiCall) focus on everyday and sound-alike words. Sentence clarity asks you to pick the clearer of two or more versions of the same statement.

Math and maps

Basic arithmetic under time pressure — elapsed time, simple percentages — and reading a simple street grid to find a route or the closest unit.

Example: "A unit went en route at 14:52 and arrived at 15:17. How long was the response?" (25 minutes.) Nothing beyond high school math; the clock is what makes it feel hard. Map items are about following directions, not knowing a real city; see map reading on dispatcher tests.

Multitasking

Two things at once: a primary task such as data entry, interrupted by something you must handle quickly. CritiCall's emergency messages give you 15 seconds each, and ECOMM's dispatcher test has you track several units as new calls arrive. The individual tasks are simple; the cost is switching back. Why candidates fail the multitasking sections explains how to train it.

The typing test is usually separate

Most agencies also set a typing minimum, often as a pass-or-fail gate in net or adjusted words per minute, and sometimes with an accuracy floor. It may be part of CritiCall (its keyboarding test), a separate NTN typing test, or the agency's own. The POST battery has no typing component. The dispatcher typing test guide explains how it is scored, and the free typing test gives you a net WPM figure.

Certification exams come later

Don't confuse the hiring test with a state certification exam. Some states require dispatchers to complete training and pass a state exam after they are hired — Texas and Florida are two examples, covered in our guides to the Texas TCOLE telecommunicator exam and the Florida 911 public safety telecommunicator exam. Those test what you learned in training; the pre-employment test does not expect any dispatch knowledge. Requirements by state are on our state pages.

Scores and preparation

None of these tests has a universal passing score: agencies set their own minimums, which we explain in dispatcher test scores explained. The good news is that because the skills overlap, most preparation carries across tests: clean numeric data entry, reading and applying rules literally, memory with structure, note-taking at speed, and at least one full-length session. For a schedule, use the two-week prep plan.

CritiCall is a registered trademark of Biddle Consulting Group, Inc. ECOMM is a trademark of the National Testing Network, Inc. POST refers to the California Commission on Peace Officer Standards and Training. DispatchDrills is an independent practice provider and is not affiliated with, endorsed by, or sponsored by any of these organizations. Every example above is original and illustrative; we do not reproduce exam content.

Common questions

What is on the 911 dispatcher test?

It depends on the test your agency uses, but most questions are data entry, cross-referencing and checking, character comparison, memory, listening and note-taking, rules-based decisions and priorities, situational judgment, reading and writing, basic math and maps, and multitasking. A typing test is usually added separately.

Is the 911 dispatcher test hard?

The individual tasks are simple; what makes them hard is the clock, numeric accuracy, switching between tasks and the length of the session. None of the common tests expects prior dispatch knowledge, and those skills improve with practice.

Is CritiCall the same as ECOMM?

No. CritiCall is a modular computer test from Biddle Consulting Group that the hiring agency runs; ECOMM is an Ergometrics exam you book through National Testing Network and share with the departments you choose. They measure overlapping skills, but a score on one is not a score on the other.

How do I know which test my agency uses?

Read the posting for where and how you are told to test, whether you pay a fee, and any named components or score types. If it does not say, ask the agency's HR contact.

Is the dispatcher test multiple choice?

Partly. Reading, judgment, memory, priority and POST's tests are multiple choice, but data entry, typing and many CritiCall components are performance tasks where you type or click under time pressure.

Can I see real test questions in advance?

No. Publishers do not release live questions, and you should be wary of anyone claiming to sell them. The official material available is format guidance: Biddle's CritiCall preparation guide and sample tests, and POST's Examinee Guide with a sample item for each test.