For 2020-2021, the Coronavirus is moving all math contests online. Please check mathleague.org for their plans, as well as the Missouri Council of Teachers of Mathematics. My understanding is mathleague plans to have a contest each month at each level (Elementary, Middle School, High School) specifically geared toward Missouri students.
I hope you can still work with students to prepare them so they can participate. If you have any questions about ways to prepare them, please don't hesitate to contact me, Dr. Kevin Hopkins: khopkins@sbuniv.edu.
In May 2021, Dr. Hopkins retired from SBU. With that and lingering Covid uncertainty there are no contests planned for 2021-22 at SBU.