Nursing educators face challenges in helping registered nurses prepare to be psychiatric nurse practitioners. Nursing educators must consider the variation of students' skill sets, experience levels, and the shortage of preceptors. Simulations can help overcome limited clinical sites and standardize skill acquisition. High-fidelity simulations can be helpful but are labor-intensive and expensive. Low-fidelity simulations are adaptable to fit the learning needs of psychiatric nurse practitioner students but little research has evaluated these simulations. This paper evaluates a series of low-fidelity interventions used to help students learn diagnostic criteria, treatment decisions, and documentation. A retrospective descriptive analysis was performed on the results of all students in five cohorts in a psychiatric nurse practitioner course (n=68) on 45 low-fidelity online simulations over five years during the course on advanced psychiatric nursing of adults. Diagnostic notes were graded on four criteria by a psychologist or a psychiatric nurse practitioner. A representative sample of grades on eight notes were analyzed for this manuscript. Survey responses from the students in one cohort were obtained to evaluate their confidence levels and perceptions of simulation utility and responses were analyzed using descriptive and qualitative methods. The overall mean of description, detail, completeness, and professionalism increased from 7.6 (out of 10) to 9 over the semester with statistically significant improvements in all four areas. The strongest correlation was between detail and completeness and the weakest correlation was between professionalism and description. Students reported that they found significant value in the low-fidelity simulation exercises. This analysis demonstrates one of the first efforts to analyze low-fidelity simulations for psychiatric nurse practitioner students. The data indicate these simulations can help students improve their confidence and skills in several areas.