The only result (as I was trying to find info on another event) is that "Take Note" got Outstanding Gender Choir and a Top Ten Award, and "Act II" got awards for Best High School Choir, Best Choreography, and Top Ten Award. I don't have a full schedule/list of participants though
It's not from a lack of trying. We've reached out to the directors in Oklahoma, but unfortunately don't usually hear back from them. We've been routinely listing Oklahoma events on our website for almost a decade now. Some years have the full info and some don't. If any Oklahoma folks see this, it's relatively easy to submit information! There's even a button on the top right where you can email a copy or photo of the schedule.
In short yes this event is happening, but no we haven't received the full performance schedule of attending choirs at this time.