West River Math Contest

Mighty in math? Put those skills to the test in the 70th West River Math Contest

We invite students from South Dakota schools to participate in this competition, held on the campus of South Dakota Mines on Monday, May 10th, 2021. Entry form (right) must be submitted by your school.


    for students who have had no more than one year of Algebra
    for students who have Geometry in progress
    for students who have Advanced Algebra in progress
    for students having completed Algebra 1, Geometry, Algebra II, and are now taking Trigonometry, Solid Geometry, or other senior level courses.
    for students who have already participated in the Advanced Math Division

*Some schools do not offer these courses in this sequence, or you may have some students out of sequence. A student should take the exam for the course in which he/she is enrolled regardless of age or grade.

Date: Mon, May 10, 2021
Time: 9:30 am - 2:00 pm
South Dakota Mines Campus
King Center | Campus Map

Entry Deadline:
Friday, April 23, 2021

For more information

Dept. of Mathematics and Computer Science
South Dakota School of Mines & Technology
501 E. St. Joseph Street
Rapid City, SD 57701-3995

(605) 394-2471

General Information


A school with less than 300 students enrolled in grades 9-12 may enter from one to six contestants in each division. Schools with more than 300 students enrolled in grades 9-12 may enter from one to 10 contestants in each division. If your school has less than 300 students but you wish to enter more than 6 students in any category, your school will be classified in the A division.   

Note: Due to concerns of COVID-19 we may need to modify the number of contestants allowed to attend from each school, please check back in April for any possible updates.


The contest will consist of a fifty-minute test followed by a twenty-minute test. The latter will be scored only if it is necessary to break ties. The contestant's score will be the score achieved on the fifty-minute test.

Pencils and Paper

All contestants should plan to provide their own pencils. The college will provide scratch paper.

Tests and Scoring

The tests in all divisions will be prepared and scored by the faculty of the Mathematics Department at South Dakota Mines.

Calculators and Cellphones

Calculators are not necessary for the exam and we will not allow their use. The use of cellphones is strictly prohibited during testing.


Schools will be split into two classes: Class A and Class B. Please indicate your school’s enrollment in grades 9-12 and we will classify you accordingly. Prizes will be awarded in each class to the top five in each division. The top scorer in each division will be awarded a prize. The exception is in the Master's Division, which will have only 1 prize, to be awarded to the top scorer.


Entry form | General Information | Schedule

Contest Schedule

Download Schedule

9:30 am

General Meeting

All students and teachers will meet in the gymnasium in the King Center.

10:00-11:30 am


Rooms for sessions TBA

11:30 am - 1:30 pm


Our dining area will be open on the 10th for your convenience. As we get closer to the contest, check out the web page for details on the cost and menu. We will also post information about the activities available for your students during the time between testing and the awards ceremony.

Please note on your entry form your estimate of the number of people in your group who will be staying with us for lunch.  


1:30 pm

Awards Ceremony

Gymnasium in the King Center



Monthly@Mines Newsletter for K-12 Educators

South Dakota Mines offers a monthly e-newsletter to keep K-12 teachers apprised of STEM activities, events and resources offered by the university.