How to run a case study as a research method

Case studies are one of the most powerful tools available to student researchers, yet most high schoolers underestimate how rigorous they must be to qualify as genuine academic work. If you want to know how to run a case study as a research method that produces publishable results, the process demands structure, intentionality, and methodological discipline from start to finish.

This guide walks you through every stage, from defining your case to writing up your findings. Whether your research sits in the social sciences, public health, education, or an interdisciplinary field, the core framework applies. No shortcuts, no improvisation.

What Is a Case Study as a Research Method?

A case study is an in-depth investigation of a single subject, group, event, organization, or phenomenon within its real-world context. It is not a summary of existing literature. It is not a survey. It is a focused empirical inquiry that uses multiple sources of evidence to build a detailed, analytical account of something specific.

Researchers choose case studies when the boundaries between the phenomenon and its context are not clearly defined. You use this method when you need the why and the how, not just the what. A case study asks: what is happening here, and what does it reveal about something broader?

Case studies can be exploratory (investigating a new area), descriptive (documenting a phenomenon in detail), or explanatory (testing a theoretical claim against real-world evidence). Knowing which type you are conducting shapes every decision that follows.

Step 1: Define Your Research Question with Precision

Every strong case study begins with a question that is specific, answerable, and meaningful. Vague questions produce vague findings. A question like "How does school leadership affect student outcomes?" is too broad. A better version: "How did one principal's instructional coaching model affect standardized test performance at a Title I middle school over two academic years?"

Your research question determines your case selection, your data sources, and your analytical lens. Spend real time here. Revise the question until it points directly at a bounded, investigable phenomenon. If you are unsure how to frame a rigorous question, reviewing a research proposal example for high school students can help you see how strong proposals anchor everything in a precise, defensible question.

Step 2: Select Your Case Deliberately

Case selection is not random and it is not arbitrary. You choose a case because it is revelatory, extreme, typical, or longitudinally significant. Each rationale is legitimate, but you must state yours explicitly in your methodology section.

A revelatory case gives you access to a phenomenon that researchers have not previously been able to examine. An extreme case sits at the outer edge of a distribution and illuminates what happens under unusual conditions. A typical case represents the norm and lets you document what average looks like. A longitudinal case tracks change over time within the same subject.

You may also run a multiple-case study, examining two or three cases in parallel to identify patterns across them. This strengthens generalizability, though it increases the workload considerably. For high school researchers working within a semester, a single well-chosen case is usually more defensible than two under-analyzed ones.

Step 3: Build Your Data Collection Protocol

The credibility of a case study depends entirely on the quality and diversity of its evidence. Researchers use the term triangulation to describe the practice of drawing from multiple data sources to confirm or complicate findings. You should plan for at least two to three distinct source types.

Common data sources in case study research include:

• Interviews: Structured or semi-structured conversations with participants who have direct knowledge of the case

• Documents: Institutional records, meeting minutes, policy texts, reports, or archival materials

• Observations: Direct or participant observation of settings, behaviors, or events relevant to the case

• Surveys: Quantitative or mixed-format instruments administered to a defined group within the case

• Physical artifacts: Objects, products, or outputs created within the case context

Each source must be documented rigorously. Record who provided information, when, under what conditions, and in what format. If you are conducting interviews, transcribe them. If you are collecting documents, organize them by date and relevance. A case study without a clean evidence trail cannot withstand peer review scrutiny.

If surveys are part of your protocol, the design matters enormously. A poorly constructed survey produces misleading data. Review guidance on how to design a survey for a research study before you finalize your instruments.

Step 4: Address Ethics and Access Before You Begin

Ethical clearance is not optional. If your case study involves human participants (and most do), you need informed consent from every adult participant and parental consent for any minors. You must explain the purpose of your research, how data will be used, and how confidentiality will be protected.

If you are affiliated with a school or research program, check whether your institution has an Institutional Review Board (IRB) process or an equivalent ethics review. Even if it does not, document your ethical procedures in your methodology section. Reviewers at serious journals will look for this. Absence of ethical documentation is a common reason manuscripts are rejected at the review stage.

Access is a parallel concern. You need permission to observe, interview, or collect documents from organizations or individuals. Secure written agreements before you begin data collection, not after. Retroactive permission is not the same thing.

Step 5: Write a Rigorous Methods Section

Your methods section is where you demonstrate that your case study is a legitimate research design, not a journalistic profile or a personal essay. Every methodological choice must be named and justified. State your case study type. Identify your data sources. Describe your data collection procedures. Explain how you analyzed the data.

Analysis in case study research typically involves coding: reading through your data and labeling recurring themes, patterns, contradictions, or significant moments. You can use inductive coding (letting themes emerge from the data) or deductive coding (applying a pre-existing theoretical framework). Many strong case studies use both.

After coding, you move to pattern-matching: comparing what you found in your case against what existing literature predicted or described. This is where your case study connects to the broader scholarly conversation. For a detailed breakdown of how to structure this section for publication, see the guide on how to write a research methods section.

Step 6: Analyze and Interpret Your Findings

Analysis is not description. Listing what happened in your case is not the same as explaining what it means. Your findings section should move between specific evidence and analytical claims. Present the data, then interpret it. Connect your interpretation to your research question and to relevant theory or prior research.

A published case study from the PJPCR archive illustrates this well. The paper examining the effects of interpersonal relationships between doctors and nurses on patient care at a specific health institution demonstrates how a bounded case can generate findings with implications far beyond the single site studied. The case is specific. The analysis is transferable.

Organize your findings around themes, not around your data sources. Do not write one section for interview findings and another for document findings. Instead, write thematic sections that draw on multiple sources simultaneously. This is what triangulation looks like in practice.

Step 7: Acknowledge Limitations Honestly

Every case study has limitations. Acknowledging them is not a weakness. It is a sign of methodological maturity. Common limitations include:

• Limited generalizability: Findings from one case may not apply universally. This is expected and acceptable in case study research.

• Researcher bias: Your own perspective influences how you observe, code, and interpret. Name this and describe how you mitigated it.

• Access constraints: You may not have been able to collect all the data you wanted. Explain what was unavailable and why.

• Time limitations: A case study conducted over two months captures a snapshot, not a complete picture. Acknowledge the temporal boundaries of your findings.

Limitations belong in their own section, typically after your findings and before your conclusion. Do not bury them in a footnote. Reviewers expect to see them addressed directly.

Step 8: Structure Your Paper for Publication

A publishable case study follows a recognizable structure: abstract, introduction, literature review, methodology, findings, discussion, limitations, and conclusion. Each section serves a distinct purpose. None is optional.

Your abstract should summarize the case, the method, the key findings, and the significance in under 250 words. Your introduction should establish the problem, the gap in existing knowledge, and the purpose of your study. Your literature review situates your case within prior scholarship without becoming a simple summary. For examples of how published student papers handle these sections, the abstract examples from published high school research papers and the guide on literature review examples for high school research papers are both worth studying before you draft.

Your title should communicate the case, the method, and the analytical focus in a single precise phrase. Weak titles obscure the research. Strong titles do the opposite. Review research paper title examples: strong vs. weak to calibrate yours before submission.

Common Mistakes to Avoid

Student researchers running case studies for the first time tend to make the same set of errors. Knowing them in advance puts you ahead.

• Treating the case study as a report rather than an analysis

• Relying on a single data source and calling it triangulation

• Failing to connect findings back to the original research question

• Confusing description with interpretation throughout the findings section

• Skipping the limitations section entirely

• Selecting a case based on convenience rather than on methodological rationale

Each of these mistakes is correctable. The key is catching them in the drafting stage, not after submission.

How to Run a Case Study as a Research Method: A Final Word

Understanding how to run a case study as a research method is understanding that rigor and depth are not in conflict. You can study a single school, a single patient cohort, a single policy implementation, or a single historical event and produce findings that matter beyond that one case. The specificity is the point. It is what allows you to go deep enough to say something true.

At the Princeton Journal of Pre-Collegiate Research, we publish student work that meets the same methodological standards as graduate-level scholarship (no exceptions, no adjustments for age). Case studies that arrive with clear questions, triangulated evidence, honest limitations, and rigorous analysis move through our review process on their merits. That is how it should work.

If you are ready to move from research to manuscript, explore our Blogs for additional writing guides, or visit Princeton JPCR to learn more about our submission process. Your case is worth investigating. Make sure your methodology proves it.