Be sure to talk with faculty about choosing a graduate school. Most graduate programs in the mathematical sciences provide students with graduate assistantships or fellowships that can cover much or all of the costs of graduate study. The following links provide information about master's and PhD programs in the mathematical sciences.
To apply to graduate school, visit the web site for the universities that interest you and search for instructions. Most universities require official transcripts, Graduate Record Exam (GRE) scores, letters of reference, and an application fee. Your undergraduate GPA and GRE scores will affect your chances of admission. According to the NSF, more than 75% of master's degree recipients in the mathematical sciences had at least a 3.25 undergraduate GPA.