Free NCJOSI Exam Prep
National Criminal Justice Officer Selection Inventory (NCJOSI²)
Prepare for the NCJOSI exam without spending hundreds on expensive prep courses. Free study guides, practice questions, flashcards, and related exam resources.
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NCJOSI Civil Service Exams: Study Roadmap
Follow this path to organize your exam preparation
Phase 1: Exam Structure, Test Rules & PacingYou are here
Learn the 80 + 120 item structure, the 2.5-hour time limit, IOS's no-calculator and photo-ID rules, and a pacing plan.
Phase 2: Verbal Comprehension
Practice recalling details and meaning from policy passages, reports and witness statements, answering only from the text.
Phase 3: Verbal Expression
Drill commonly misspelled report words, confusable pairs such as than/then, and grammatically correct word choice.
Phase 4: Deductive Reasoning
Apply laws and policies given in a passage to specific situations, including conditional 'only if' and 'unless' rules.
Phase 5: Inductive Reasoning & Graphs
Read tables, bar graphs and pie charts to identify trends and judge whether a strategy worked.
Phase 6: Problem Sensitivity
Identify the main problem, the problem likely to arise and the best next step in short scenarios.
Phase 7: Spatial Orientation
Use a map and compass to find the least-distance route and to locate objects relative to one another.
Phase 8: Information Gathering, Selective Attention, Flexibility of Closure & Visualization
Order five or six statements, link witness accounts, match symbol strings exactly, find hidden shapes and recognize changed faces.
Phase 9: Section II Integrity Measure
Learn the five-point agreement scale and IOS's advice to answer honestly, and review the four integrity domains.
Phase 10 (Original NCJOSI Only): Mathematical Reasoning
Practice calculator-free arithmetic, percentages, ratios, perimeter, area and circumference word problems.
Can You Take the NCJOSI Exam?
Check if you meet the basic eligibility requirements
- •U.S. citizenship usually required (some agencies accept permanent residents).
- •Valid driver's license.
- •Vision, hearing, and medical/fitness standards apply at the agency level.
NCJOSI Quick Facts
Time to Get Licensed
4-6 weeks for most law enforcement candidates
From start to license in hand
Retake Policy
Set by each hiring agency; IOS does not publish a retake policy for the NCJOSI².
Total Cost Breakdown
Free NCJOSI Prep Tools
Reported exam pass rate: I/O Solutions does not publish a national NCJOSI pass rate; cut scores and pass rates vary by hiring agency.. These figures describe exam candidates, not OpenExamPrep user outcomes. Check the exam sponsor’s website for published statistics.
100 Practice Questions
Practice reading, grammar, spelling, reasoning, maps and math, plus officer judgment and integrity scenarios.
Comprehensive Topic Review
Detailed guides for both Section I (80 cognitive items) and Section II (120 non-cognitive/integrity items).
Free Access
Use all NCJOSI practice resources at no cost — no registration or credit card required.
Subtest-Specific Practice
Master reasoning, reading, grammar, math, memory, maps, and behavioral integrity independently.
What You'll Study
10 chapters covering the exam topics in this guide
Chapter 1: NCJOSI Overview, Test Mechanics & Pacing Strategies
3 sections
Chapter 2: Verbal Comprehension & Police Document Analysis
3 sections
Chapter 3: Verbal Expression, Grammar & Police Report Mechanics
3 sections
Chapter 4: Deductive Reasoning & Policy Application
3 sections
Chapter 5: Inductive Reasoning, Pattern Recognition & Graph Interpretation
3 sections
Chapter 6: Problem Sensitivity & Situational Hazard Recognition
3 sections
Chapter 7: Spatial Orientation, Map Reading & Route Planning
3 sections
Chapter 8: Information Gathering, Selective Attention, Flexibility of Closure & Visualization
4 sections
Chapter 9: Applied Mathematics (Original NCJOSI Mathematical Reasoning)
4 sections
Chapter 10: Section II Non-Cognitive (Integrity) Measure
5 sections
NCJOSI Exam Details
National Criminal Justice Officer Selection Inventory (NCJOSI²)
Administered by I/O Solutions (Industrial/Organizational Solutions)
Exam Content Breakdown
Based on the official I/O Solutions (Industrial/Organizational Solutions) content outline
Applying general rules, such as laws and policies given in a passage, to a specific situation to decide the best course of action.
Finding which of four objects is hidden in a figure; the object may be larger, smaller or rotated but keeps identical proportions.
Combining separate pieces of information from tables, bar graphs or pie graphs to identify trends and judge whether strategies worked.
Following a given rule to put five or six statements in chronological or logical order, or linking details across witnesses' statements.
Telling when something is wrong or likely to go wrong: identifying the main problem, the problem likely to arise, or the step to take.
Completing a task despite distraction or monotony by choosing the option that exactly matches a string of letters, numbers and symbols.
Using a map and compass to choose the shortest (least-distance) route or to tell where one location is in relation to another.
Reading a passage and recalling its details and meaning, as officers do with bulletins, statutes, ordinances and policies.
Choosing correctly spelled words, finding misspellings and choosing grammatically correct words or phrases in sentences.
Imagining how something looks after changes; IOS's samples match a person in profile to a headshot after changes in hair, facial hair or expression.
Statements rated on a five-point agreement scale (1 = Strongly Agree to 5 = Strongly Disagree) across four IOS domains: Anti-Social Behaviors, Positive Outlook, Orderliness/Diligence and Socialization; not scored as right or wrong.
What's Included
10 Chapters
Complete exam coverage
Practice Quizzes
With detailed explanations
Free to Start
No credit card required

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What's Next After the NCJOSI?
After passing the NCJOSI, you can pursue these career paths
NPOST
Adjacent police-officer entrance exam published by Stanard & Associates and used by many law enforcement agencies.
CJBAT
State-specific entry-level law enforcement assessment used across Florida criminal justice selection.
POST Entry-Level Exam
State Peace Officer Standards and Training entry tests, such as California's POST Entry-Level Law Enforcement Test Battery (PELLETB), used where agencies do not contract with IOS.
NCJOSI Exam FAQ
Official I/O Solutions (Industrial/Organizational Solutions) Resources
Verify information with these official sources
More Free Resources
Ready to Start Your Free NCJOSI Prep?
Review the study guide, practice key concepts, and use the free tools at your own pace.