I'll be starting The latter half of my math degree this upcoming Fall term, and while checking some prerequisites for my degree, I realized that I can turn my BS into a BS/MS by adding one more year and a few graduate courses. Now, I've been a bit confused about PhD programs and their preferences for non-graduate students taking graduate courses. So my question is, would grad school prefer the BS/MS over the BS? Is an MS necessary for grad school? With the BS/MS I will be taking grad level analysis and algebra after taking modern analysis and modern algebra, both of which are one semester courses. If I stuck with the BS route, I'd only take modern analysis and modern algebra; is this enough for grad school?