Dear Math Coordinators, I am writing to inform you of the 2016 OSU High School Math Day. Please share this information with your high school's academic coach, interested faculty members, and students. The math day consists of a 75-minute multiple-choice contest, followed by breakout sessions featuring presentations by OSU faculty, a low-intensity team competition, and activities organized by OSU's undergraduate math club. The contest is a challenging exam which emphasizes creativity, logic and problem solving skills. All juniors and seniors with an interest in mathematics are highly encouraged to participate. Students in earlier grades who have a strong background and aptitude for mathematics are also eligible, and are welcome to join the event. The day will begin with the contest, held in the Student Union Ballroom on OSU's Stillwater Campus on Monday, October 3, 2016, from 1:00 p.m. to approximately 2:15 p.m. The student union is on the south end of our Stillwater campus; the ballroom is on the second floor. After the contest, we'll have two rounds of breakout sessions, tentatively including presentations by OSU faculty, a team competition, and a problem-solving activity run by OSU's undergraduate math club, and then a brief awards ceremony. The day should conclude between 4:00 and 4:30. To ensure that we have enough space, we are asking that all participants be registered by September 23, 2016. The registration form is available online at <https://math.okstate.edu/people/mermin/hsc/>. Please mail or fax a completed form by this deadline. Last year's exam, solutions, and related material may be found on the website <https://math.okstate.edu/people/mermin/hsc/2015.html>. We normally request a materials fee of 5 dollars per student, payable in advance or on the day of the exam. This year, for students taking the contest at our Stillwater location only, we are able to waive the materials fee. Out of state entrants and those more than 150 miles from Stillwater should contact us. Off-site testing is possible. All other information including an announcement, parking instructions, and a campus map are available on the contest website <https://math.okstate.edu/people/mermin/hsc/>. If you have questions about the contest, please contact me or Angela McFarlin at <hsc@math.okstate.edu> or at (405) 744-5688. For other questions about OSU, you may also contact the Office of High School and College Relations at 1-800-852-1255 if you are outside the state of Oklahoma, or 1-800-233-5019 Ext. 3 if you are within the state. I look forward to seeing you and your students on the OSU Stillwater Campus for the contest. Sincerely, Jeff Mermin -- Jeff Mermin Associate Professor of Mathematics Oklahoma State University mermin@math.okstate.edu P.S. I apologize for either the lateness of this announcement or its duplication. OSU made changes to its computer system over the summer, and while resolving them I believe I simply neglected to make this announcement. I hope the late notice does not prevent any interested students from participating.