Many students experience difficulty in acquiring basic writing skills and educators need to efficiently address those deficits by implementing an intervention with a high likelihood for success. The current article demonstrates the utility of using a brief experimental analysis (BEA) to identify a letter-formation intervention for a second-grade student with handwriting difficulties. The results suggested that the BEA led to differentiated results for letter formation interventions, and the identified intervention was implemented for 8 weeks with moderate effectiveness. Suggestions for future research are included.