Pass the NCJOSI-2.
Realistic timed simulations, question-by-question study mode with instant feedback, and detailed construct-level analytics — built by testing professionals to help you prepare for and pass the police written exam.
What's on the NCJOSI-2?
The National Criminal Justice Officer Selection Inventory measures seven cognitive and behavioral constructs. Our study materials and simulations cover every one of them.
Reading Comprehension
Understand and analyze written passages — police reports, legal documents, policy memos, and witness statements.
~100 itemsWriting & Grammar
Identify correct grammar, punctuation, spelling, and sentence structure in the context of law enforcement communication.
~100 itemsMath & Quantitative
Solve arithmetic, word problems, and basic quantitative reasoning relevant to patrol and investigations work.
~80 itemsDeductive Reasoning
Draw valid conclusions from a set of facts or rules — the core logical thinking skill for investigations.
~60 itemsInductive Reasoning
Identify patterns, make generalizations, and predict outcomes from incomplete information.
~50 itemsSpatial Orientation
Read maps, follow directions, and visualize spatial relationships — essential for patrol navigation.
~40 itemsSelective Attention
Quickly and accurately compare details, spot differences, and maintain focus under time pressure.
~40 itemsWhy Badge & Hose?
Simulation Fidelity
Our timed practice exams replicate the real NCJOSI-2 testing experience — sequential item delivery, enforced time limits, and no going back. You'll know exactly what test day feels like before you walk in.
Construct-Level Analytics
Don't just get a score — know which constructs you're strong in and where you need work. Every simulation gives you a breakdown by all 7 constructs, with historical comparison across attempts.
Expert-Designed Content
Every question is written by testing professionals with I/O psychology backgrounds and reviewed by subject matter experts with law enforcement experience.
Study at Your Own Pace
Study mode serves questions one at a time with immediate feedback, explanations, and a weighted review system that focuses on your weakest areas. Study on your phone during downtime.
Simple, transparent pricing
No subscriptions. No recurring charges. Pay once and prep on your schedule.
Free Tier
forever
- 15 study questions
- Reading Comp & Writing/Grammar
- 1 mini simulation (10 questions)
- Instant feedback & explanations
Full Prep
60-day access
- 470+ questions — all 7 constructs
- 3 full-length timed simulations
- Construct-level performance reports
- Weighted study mode with progress tracking
- Attempt comparison & trend analysis
Study Only
30-day access
- 470+ questions — all 7 constructs
- No timed simulations
- Instant feedback & explanations
- Weighted study mode with progress tracking
Need just one practice test? Single simulation available for $29. Individual construct modules available for $15 each.
How to find out which exam your department uses
Not every agency uses the NCJOSI-2. Before you start preparing, confirm which exam you'll be taking:
- Check the job posting. Most postings name the written exam or the testing vendor (often I/O Solutions for NCJOSI-2).
- Call the civil service commission or HR office for the city or county.
- Check the department's website under "Careers" or "Join" pages.
- Ask your recruiter or union rep. They'll know which exam is administered.
Common alternatives include the NPOST, PELLETB, and agency-specific civil service exams. More exam types coming soon.
Frequently asked questions
What is the NCJOSI-2?
The National Criminal Justice Officer Selection Inventory, 2nd Edition (NCJOSI-2) is a written cognitive ability test used by law enforcement agencies across the United States to screen entry-level police officer candidates. It's published by I/O Solutions and measures seven constructs: reading comprehension, writing/grammar, math, deductive reasoning, inductive reasoning, spatial orientation, and selective attention.
What's the difference between study mode and simulation mode?
Study mode lets you practice one question at a time with immediate feedback, detailed explanations, and the ability to focus on specific constructs. There's no timer and no pressure. Simulation mode replicates the actual test with enforced time limits, sequential delivery, and no going back. You get a full score report with construct breakdown after submitting.
Can I use this on my phone?
Yes. Study mode is fully mobile-responsive and designed for phone use. Simulation mode works best on a laptop or tablet since it mimics the desktop testing environment you'll encounter on exam day.
What happens when my access expires?
Your progress data and simulation results are preserved. You can purchase again at any time to pick up where you left off. Free tier access never expires.
Can I get a refund?
Yes. If you haven't accessed any paid content and it's been fewer than 7 days since purchase, you can request a full refund from your dashboard. Once you start studying with paid content, the purchase is final.
Is my payment secure?
All payments are processed by Stripe, a PCI Level 1 certified payment processor. We never see or store your credit card number.
Does this guarantee I'll pass?
No test prep product can guarantee a passing score — be skeptical of any that claim to. What we offer is thorough preparation: realistic practice content, detailed performance feedback, and a systematic way to identify and improve your weak areas.
Start preparing today.
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