How to Pass the Written Exam for Investigator Roles: 5 Proven Strategies

The written exam is a critical hurdle in the hiring process for investigators, compliance officers, and ethics professionals in international organizations. It tests your ability to analyze cases, plan strategically, and communicate findings clearly—all essential skills for real-world investigative work.


Unlike traditional multiple-choice tests, these exams often require candidates for investigative roles to prioritize allegations, outline investigative steps, and apply logical reasoning to complex scenarios. A strong performance can determine whether you advance to the interview stage, making preparation key.


To help you succeed, here are five expert strategies drawn from real-world written exam samples to ensure your responses are clear, structured, and effective.


1. Prioritize Like an Investigator


Most investigative exams present multiple allegations and require candidates to determine which cases to investigate first. This tests your ability to assess risk, allocate resources, and think strategically under pressure. A well-structured answer ranks cases effectively and explains why some take precedence over others.


  • Assess urgency and risk by prioritizing cases involving immediate harm, public safety, or significant financial loss
  • Consider reputational risk, especially when cases involve senior officials or high-profile programs
  • Use a structured approach that clearly explains ranking criteria based on investigative best practices


Demonstrating clear reasoning is as important as selecting the correct order of priority. Strong responses link prioritization decisions to real-world investigative considerations rather than personal judgment.

2. Develop a Methodical Investigation Plan


A well-structured investigative plan demonstrates analytical skills and professional judgment. Examiners look for responses that follow a logical sequence and align with due process to ensure fairness and thoroughness.


  • Identify key players, including subjects, complainants, witnesses, and relevant stakeholders
  • Map out investigative steps by starting with document reviews before conducting interviews
  • Apply relevant methodologies, such as forensic accounting, digital forensics, or trauma-informed interviewing


A structured plan signals that you understand how to conduct an impartial, systematic investigation rather than reacting to allegations without a clear process.


3. Write with Clarity and Precision


Investigators must communicate findings clearly, concisely, and persuasively. Examiners are not just testing investigative skills—they also assess whether candidates can write reports that are actionable and unambiguous.


  • Follow formatting instructions carefully, ensuring that responses align with the specified structure
  • Use precise terminology such as “diversion of funds,” “conflict of interest,” and “procurement fraud”
  • Be direct and avoid unnecessary detail, keeping responses clear, professional, and to the point


Writing with clarity ensures that decision-makers can understand and act on investigative findings without confusion or misinterpretation


4. Anticipate Common Case Studies


Most written exams for investigators follow recurring investigative themes. Knowing these in advance allows candidates to prepare structured responses quickly and efficiently while demonstrating familiarity with integrity risks.


  • Procurement fraud cases often involve bid rigging, inflated contracts, and conflicts of interest
  • Misuse of funds scenarios may focus on unauthorized transactions, falsified records, or off-book accounts
  • Sexual misconduct cases typically assess handling anonymous complaints, credibility evaluations, and survivor-centered approaches


Practicing responses to these common case types will help you develop a structured approach and improve response time during the exam.


5. Simulate Exam Conditions and Manage Time Effectively


Most written exams have strict time limits, typically 60 to 180 minutes. Time management is critical—examiners want to see if you can analyze cases efficiently and complete all required tasks within the given time frame.


  • Practice under timed conditions by working through real-world case studies and noting what takes the most time
  • Prioritize completion over perfection by ensuring all questions are answered rather than focusing too much on one response
  • Leave time to review answers for missing details or errors, as a final check can improve clarity and accuracy


Being able to think critically under pressure is just as important as providing a correct answer, as many investigative roles require quick decision-making in complex situations.


Final Thoughts: Master the Written Exam to Stand Out


With international organizations tightening budgets and increasing competition for investigative roles, excelling in the written exam phase is more important than ever. Candidates who can prioritize cases, develop structured responses, manage time effectively, and write with clarity will have a distinct advantage.


A strong performance on the written test can be the key to landing an interview and unlocking your next career opportunity. By preparing strategically and refining your approach, you can set yourself apart as a top candidate for investigative roles.



Liked this post? Get even more insights. Join the Integrity Career Institute Newsletter!


Every week, we dive deeper into topics like this, sharing exclusive insights, expert tips, and hand-picked opportunities in investigation, ethics, and compliance.


Ready take your expertise to the next level?

Hi, I'm Sârra-Tilila!

I help international organizations and NGOs strengthen their integrity frameworks through internal policy development, tailored trainings, misconduct investigations, and dispute resolution. With over a decade of legal and investigative experience, I’ve worked extensively in Africa and collaborated with global giants like the World Bank and the World Food Programme.


My work is driven by a deep passion for tackling fraud and corruption while promoting transparency and accountability in international development. If you’re looking for expert support to achieve your organization’s integrity goals, let’s connect!

© 2022 par Sârra-Tilila Bounfour