Math Major
Core Requirements
57 units of Math courses are required, and must be taken for a letter grade. This unit number is reduced by the number of 200level graduate Math courses.
Within the 57 units, the following must be met. Singlevariable calculus credit can be counted toward the requirement.
At least 8 Math Courses above Math 63CM/63DM
 If a student has 10 units of singlevariable calculus credit and has completed either the Math 50 or Math 60CM/DM series, this leaves a remaining of 8 Math Department courses above Math 63CM/DM.
 Note: For students whose Math course experience at the 100level or in Math 56 straddles the transition to 4 units from 3 units (which occurred over Summer 2022), the figure of 57 will be further reduced by the number of 100level courses below the 190’s taken prior to Autumn 2022.
 Math 56 may count towards the 8 courses.
OutofDepartment Courses that count as Math Department Courses
 Certain courses outside of the department can count as Math Department courses. These are:
 Stats 116 (no longer offered)
 Stats 118 or 200 (at most one, but not both and neither if Stats 116 is being used)
 Phil 151
 Phil 152
 No other courses outside the Math Department can count in this way. There are no exceptions to this for any reason. (Stats 117 is a preapproved elective, see list below.)
Other Math Courses
 Courses that CAN be counted toward the requirement include:
 Math Q courses (IntroSems)
 Courses that CANNOT be counted include:
 Math 193
 Math 193X
 Math 198
Additional Requirements for the 57 Units
 If a student is planning on using a crosslisted course towards the major or minor that is not the Math crosslisting, contact the Student Services Officer with the course name.
 At least 32 units, reduced by the number of 200level graduate Math courses, must be taken at Stanford.
 Only Math 50/60CM/60DM series and firstyear singlevariable calculus can be double counted toward any other major or minor.
Electives
Four elective courses are required. This goes beyond the 57 core units discussed above.
The following rules govern the elective course choice:
 Math Department courses numbered Math 101 and above can be used as electives except for Math 193, Math 197, and Math 198.
 Students can choose from any of the approved outofdepartment courses as their electives. A list of such courses is given below.
 Math 193X and Math 199 may only be counted as electives, not as the core Math courses.
 One of these courses may be taken as CR/NC. (Note: The letter grade policy does not apply for courses taken in Spring 2020 and the 20202021 academic year due to COVID19. Please see the official requirements.)
PreApproved Electives
The courses in the table below are automatically approved to count as elective courses for the major.
 This list is not exclusive. If other courses are high enough in math content, they are likely to be approved.
 Primarily only undergraduate courses are included here, but many graduate courses may also be used.
 Please contact mathstudentservices [at] stanford.edu (mathstudentservices[at]stanford[dot]edu) well in advance of graduation (ideally by the fall quarter of your senior year) if you have questions about the usability of courses not on this list.
Department  Courses 

Astronautics & Aeronautics:  100*, 218 
Biology  141, 165, 188 
Bioengineering  101 
Chemistry:  151, 153, 171, 173, 175 
Classics:  136 
Computer Science:  103, 109, 129, 148, 154, 157, 161, 166, 168, 205L, 221, 224N 228, 229, 229T/M, 230, 233, 234, 235, 250, 251, 254, 255, 256, 259Q, 261, 265, 267, 268, 269Q, 354, 355 
Data Sciences:  108 
Economics:  50, 51, 52, 102A/B/C, 103, 111, 136, 137, 140, 160, 162, 167G 180, 181, 182, 202, 203, 204, 284 
Electrical Engineering:  263, 274, 276, 364A, 364B, 387 
Engineering:  14, 15, 60, 62 
Earth Systems Science:  246A 
Management Science & Engineering:  111, 112, 121, 135, 145, 211, 220, 226, 232H, 245A, 245B, 310 
Music:  320, 423, 424 
Philosophy:  150/250, 151*, 152*, 154/254, 159, 162 *PHIL 151 & PHIL 152: Each may count towards either the 57 core Math units or as an elective course, but not both.

Physics:  14N, 41*, 43*, 45, 61*, 70, 71 (formerly 63), 81 (formerly 65), 100, 104, 107, 108, 110, 112, 113, 120, 121, 130, 131, 134, 160, 161, 170, 171, 172, 210269, 330. *The grading basis for these courses is Satisfactory/No Credit. At most one can count toward the elective requirement. Physics AP credit does not count toward the elective requirement. 
Statistics:  110, 116*, 117, 118*, 141, 160, 191, 200*, 203, 205, 206, 207, 213, 217, 218, 229, 231, 240, 270, 271, 305A, 315B, 318 *STATS 116 (no longer offered), STATS 118 or 200 (at most one, but not both, and neither if STATS 116 is being used): Count as Math courses. May count towards either the 57 math units or as an elective course, but not both. 
Petition for an out of department elective
A course that uses a lot of numbers or basic algebra doesn’t necessarily qualify as an elective for the Math major. There must be a certain level of Math that is used throughout the course (e.g., at least Math 21 or above) that is demonstrated by course material such as exams, or a course website. For example, a Computer Science course that's primary focus is on coding, or a natural science course that is primarily focused on lab experiments does not qualify. See the table of preapproved elective courses for a sense of this.
If you would like to petition for a class to count as an elective, please be prepared to provide either course material (such as exams or problem sets with solutions) or a course website which gives a clear indication about the level of Math used throughout the course.
Writing in the Major (WIM)
WIM (Writing in the Major) is a University requirement for the major and must be taken for a letter grade. Students may choose one course:
 Math 101
 Math 109
 Math 110
 Math 120
 Math 171
Grading Policy
Students may take 1 course CR/NC towards the elective requirements.
Note: The CR/NC policy from the 202021 academic year does not extend beyond Summer 2021. From Autumn 2021 onwards all courses towards the Math major must be taken for a letter grade.
Resources and Additional Information
Resources
 Math Major Checklist
 Please send questions to mathstudentservices [at] stanford.edu (mathstudentservices[at]stanford[dot]edu)
More Information on Requirements
 Official Requirements can be found on our Bulletin page.
 The department requirements are in addition to the University’s basic requirements for undergraduate degrees.