Despite the Gram stain being an important medical laboratory technique, our study is limited and one cannot extrapolate the results presented here to the broad variety of diagnostic tests used in the clinical setting. Similarly, it may be difficult to extrapolate our findings to a greater population, since the act of volunteering for this study by the participants demonstrates a possible eagerness to learn that other students may not possess. Nevertheless, this report establishes a proof of principle to carry out similar studies in the future in order to understand the importance of practical interventions during medical doctors and other health professionals training, especially in diagnostic testing and analysis. Students’ early exposure to diagnostic techniques preferably as undergraduates or at the initial steps of their medical education may enhance their critical thinking, diagnostic skills, and clinical decision-making.