The physics graduate school admissions process is primarily determined by the physics department, which evaluates applicants through a faculty committee that considers factors such as GPA, GRE scores, and letters of recommendation. Unlike undergraduate admissions, where acceptance rates are generally higher, graduate programs are highly competitive, with many qualified candidates being denied admission each year. A strong academic record, particularly a GPA above 3.5, is crucial, as departments seek students who are likely to complete their degrees. The GRE subject test is particularly important for comparing applicants from different institutions, while letters of recommendation can significantly influence decisions, especially if they provide detailed insights into a candidate's abilities. Overall, prospective students should focus on academic performance, standardized test scores, and securing meaningful recommendations to enhance their chances of admission.