- What This Cheat Sheet Covers
- Exam Format at a Glance
- The Three Domains, Ranked by Weight
- Eligibility & Registration Mechanics
- Scoring & the 650 Passing Threshold
- Retake Waits & Attempt Limits
- Maintenance, PDUs & the Current Pause
- A Domain-Weighted Final Review Plan
- FAQ: Quick Answers Before Test Day
- The exam has 114 questions (80 scored, 34 unscored) in 2 hours 15 minutes, delivered by Pearson VUE.
- Passing requires 650 on an 800-point scaled score - not a percentage of questions right.
- Adjudication Process is worth 56% of the exam - by far the heaviest domain to master.
- The assessment fee is USD 0 for approved candidates; eligibility runs through your certification service representative.
What This Cheat Sheet Covers
This page is a compressed, one-stop reference for Adjudicator Professional Certification (APC) candidates who already know the basics and want a fast pre-exam refresher. It is not a substitute for structured preparation - for that, see the full APC Study Guide 2026: How to Pass on Your First Attempt - but it puts every hard number, deadline rule, and domain weight in one scrollable place so you can check your memory the night before test day.
Everything below comes directly from the SPēD Program Management Office at the Center for Development of Security Excellence (CDSE), part of the Defense Counterintelligence and Security Agency (DCSA), with oversight from the Adjudicator Certification Governance Board. If a number here contradicts something you read elsewhere, trust the official handbook and the CDSE certification pages first.
Exam Format at a Glance
Before diving into content, lock in the mechanics. These are the numbers that determine how you pace yourself in the room.
| Element | Detail |
|---|---|
| Delivery vendor | Pearson VUE, secure test centers |
| Total questions | 114 multiple-choice items |
| Scored vs. unscored | 80 scored / 34 unscored |
| Testing time | 2 hours 15 minutes |
| Passing score | 650 on an 800-point scaled system |
| Assessment fee | USD 0 for approved candidates and their organizations |
| Exam conditions | Closed-book, proctored, content nondisclosure agreement required |
Because 34 of the 114 questions are unscored, you cannot identify which items count toward your result - treat every question with equal seriousness. At roughly 1.2 minutes per question across 114 items, pacing discipline matters more than trying to "save time" by rushing early questions. For a deeper breakdown of how the scaled score actually works, see APC Passing Score 2026: Exactly What You Need to Pass.
Key Takeaway
Budget your 2 hours 15 minutes evenly across 114 questions and don't try to "guess" which ones are unscored - pacing consistency beats speed on any single item.
The Three Domains, Ranked by Weight
The 2026 handbook uses updated personnel-vetting terminology, but the weighting structure is unchanged: three domains, one of them dominant. If you only have time to deep-dive one content area, this is where it goes.
Domain 2: Adjudication Process - 56%
This is the exam. More than half of every scored question set draws from this domain, so weak recall here caps your ceiling no matter how strong the other two domains are.
- Whole-person concept application and adjudicative guidelines
- Mitigating and disqualifying condition analysis
- Case documentation, determination rationale, and due-process steps
Domain 1: National Security & Personnel Security Program - 29%
The policy and program backbone that frames every adjudication you'll ever make.
- Governing authorities, executive orders, and directives behind personnel vetting
- Roles of adjudicative facilities and program stakeholders
- How national security program requirements interact with agency-specific procedures
Domain 3: Personnel Security Process - 15%
The smallest domain by weight, but still enough to swing a borderline score.
- Investigation types and how findings flow into an adjudicative case file
- Continuous vetting concepts and reporting requirements
- Periodic reinvestigation and process timelines
For a full walkthrough of subtopics inside each of these three areas, cross-reference APC Exam Domains 2026: Complete Guide to All 3 Content Areas. If you're trying to gauge how tough this weighting makes the overall exam relative to your background, How Hard Is the APC Exam? Complete Difficulty Guide 2026 breaks that down further.
Eligibility & Registration Mechanics
APC eligibility isn't self-certified - it runs through your organization's certification service representative, who verifies training and experience before you're cleared to schedule with Pearson VUE.
- Required training: Overview of Federal Personnel Vetting (PS185.16) and Fundamentals of National Security Adjudications (PS101.10 or PS101.01).
- Experience substitution: Two years of relevant national-security adjudication experience may substitute for the training and on-the-job requirement, with employer approval.
- Documented on-the-job experience: Verified by your certification service representative, not self-reported.
- Fee: USD 0 for approved candidates and their organizations - there is no separate exam purchase step once eligibility is confirmed.
Because eligibility, training substitution, and documentation rules have several moving parts, review the complete breakdown in APC Requirements 2026: Eligibility, Prerequisites & How to Qualify before you assume you qualify. If you're budgeting time around your organization's testing calendar, APC Exam Dates 2026: Testing Windows, Deadlines & Scheduling covers scheduling windows in more depth, and since the fee itself is $0, the real "cost" conversation is about training time and prep - see APC Certification Cost 2026: Complete Pricing Breakdown for that angle.
Scoring & the 650 Passing Threshold
APC uses a scaled scoring system out of 800 points, and passing means reaching 650 - not answering 650 out of 800 questions correctly, and not hitting a flat percentage of the 80 scored items. Scaled scoring adjusts for item difficulty across different exam forms, which is also why the unscored 34 questions exist: they're being tested for future forms without affecting your result.
Calendar-year 2025 results show 58 passes out of 77 assessments delivered, a 75.32% assessment pass rate. That figure describes assessment outcomes, not question-level difficulty, and it's worth understanding in context rather than as a simple "3 out of 4 pass" shortcut - see APC Pass Rate 2026: What the Data Shows for the full analysis of what that number does and doesn't tell you.
Key Takeaway
Don't calculate a target "percent correct." Study to maximize scaled performance across all three domains, weighted toward Adjudication Process, since that's what actually drives you past 650.
Retake Waits & Attempt Limits
If you don't pass on the first try, the retake structure is fixed and escalating:
- After attempt 1: 30-day wait before retesting
- After attempt 2: 60-day wait before retesting
- After attempt 3 and beyond: 90-day wait before retesting
- Overall limit: Eight sittings maximum
Because each failed attempt adds a longer delay, cramming for a guess-and-check retake is a poor strategy - a 30-, 60-, or 90-day gap is real lost time in a certification tied to your job function. Build your first attempt around a genuine command of Domain 2 rather than treating early sittings as "practice runs."
Maintenance, PDUs & the Current Pause
Standard maintenance under the SPēD program requires 100 professional development units (PDUs) every two years, including at least 50 security-related PDUs. That's the steady-state rule you should plan around long-term.
However, as of September 10, 2026, maintenance, renewal, and PDU reporting remain paused under the policy effective March 15, 2025. Certifications remain active during this pause - you don't need to log PDUs or submit renewal paperwork while the pause is in effect. Keep an eye on official CDSE communications for when standard reporting resumes, since the underlying 100-PDU / 50-security-PDU structure hasn't been eliminated, just temporarily suspended.
A Domain-Weighted Final Review Plan
If you're in your last stretch before test day, allocate review time in rough proportion to domain weight rather than splitting hours evenly across all three areas. A simple two-week compression of a longer study plan looks like this:
Adjudication Process (56%) + weak-area triage
- Rework whole-person concept scenarios and mitigating/disqualifying condition drills
- Run timed practice sets focused only on Domain 2 case-analysis questions
- Flag any recurring misses for a second pass later in the week
National Security & Personnel Security Program (29%) + Personnel Security Process (15%)
- Review governing directives and adjudicative facility roles for Domain 1
- Cover investigation types, continuous vetting, and reinvestigation timelines for Domain 3
- Finish with a full-length timed practice exam at apcprep.com to simulate the 2 hour 15 minute window
This isn't a generic study framework repurposed for APC - it's built specifically around the 56/29/15 domain split, so the majority of your remaining hours go where the majority of the exam actually lives. For a longer runway with weekly milestones, the complete APC Study Guide 2026 lays out a full multi-week version of this same weighted approach, and running scored practice sets at apcprep.com is the fastest way to see which domain is actually dragging your scaled score down.
Why Candidates Pursue This Credential
APC exists specifically for national-security adjudicators working within participating organizations - it isn't a general-purpose security certification aimed at the broader industry. That narrow scope is part of what makes the exam content so concentrated on adjudication mechanics rather than broad security management theory. If you're still weighing whether pursuing certification fits your career track, Is the APC Certification Worth It? Complete ROI Analysis 2026 and APC Salary Guide 2026: Complete Earnings Analysis both address that question from different angles.
FAQ: Quick Answers Before Test Day
There are 114 multiple-choice questions total: 80 are scored and 34 are unscored, delivered in a 2 hour 15 minute session at a Pearson VUE test center.
You need 650 on an 800-point scaled scoring system. It is not a raw percentage of correct answers, so don't try to calculate "percent right" as your benchmark.
Adjudication Process, which carries 56% of the exam weight - more than the other two domains combined. National Security & Personnel Security Program (29%) and Personnel Security Process (15%) still matter, but Domain 2 has the biggest impact on your scaled score.
The pause, effective since March 15, 2025 and still in place as of September 10, 2026, suspends maintenance, renewal, and PDU reporting. Certifications remain active during this window, but the standard 100-PDU-per-two-years requirement (with 50 security-related) resumes once the pause ends.
Up to eight sittings total, with mandatory waits of 30 days after the first attempt, 60 days after the second, and 90 days after each subsequent attempt.