How to Write a Personal Finance Case Study

A useful case study places a fictional person at a decision point. It gives students relevant facts, a real constraint, plausible options, and enough uncertainty to justify discussion. It does not hide one teacher-approved answer behind a long story.

Build the case in seven steps

1. Name the decision. Write a question students can answer: choose, prioritize, revise, or verify.
2. Define the learning evidence. Decide whether students must calculate, compare, cite, explain, or revise.
3. Create a fictional profile. Include only details that affect the decision.
4. Add a constraint. Use time, access, cost, risk, changing income, or missing information.
5. Offer plausible options. Each should protect something and give something up.
6. Check every number. Recalculate totals and label simplified assumptions.
7. Add a change. A new fact tests whether students can revise rather than defend an original answer at all costs.

Complete example: the certification fund

Use: Saving and budgeting, grades 9 to 12, 25 to 35 minutes

Jordan is preparing for a required certification exam that costs $720. Jordan has $120 saved and has nine months before registration closes. During six school months, Jordan can contribute as much as $55 per month. During three summer months, Jordan can contribute as much as $110 per month. The money may also need to cover an unexpected $150 transportation repair. A savings account has no monthly fee and allows immediate transfers. A second account advertises a higher yield, but transfers may take two business days. The exact rates and withdrawal terms still need verification.

Decision: Should Jordan use a flat contribution, a seasonal contribution, change the goal date, choose a lower-cost credential path, or combine approaches?

Student task:

1. Calculate the remaining gap.
2. Test a flat monthly contribution and a seasonal contribution.
3. Choose where to hold the money and explain how access affects the choice.
4. Identify one fact that needs a current source.
5. Recommend a plan and name the tradeoff it accepts.

Changed condition: After students finish, announce that registration closes before the final summer month. Jordan now has six school months and two summer months. Students must revise the contribution schedule or recommendation and explain what changed.

Teacher notes: The original gap is $600. A schedule of six contributions at $45 and three at $110 reaches $600 because (6 × $45) + (3 × $110) = $600. Other schedules are defensible if they reach the goal and respect the monthly limits. Under the changed condition, the most Jordan can contribute is $550 because (6 × $55) + (2 × $110) = $550. That leaves a $50 shortfall, so Jordan must change the goal date, choose a lower-cost credential path, or add another verified source of funds. Strong responses discuss access, the uncertain repair, and the difference between a stated yield and a guaranteed outcome. Do not award points for choosing one account or one priority. Score the arithmetic, evidence, tradeoff, verification step, and revision.

Test the case before class

Solve it in more than one way. If only one option can be defended, decide whether that is intentional. Remove decorative detail that increases reading load without affecting the choice. Check that no prompt asks students to compare the case to their family. Ask a colleague whether the numbers, timeline, and options are internally consistent.

Use the financial scenario builder for a quick starting point and the rubric builder for scoring. For multi-round decision making, continue with the simulation guide.