* Oklahoma State Department of Education (OSDE): The OSDE might have aggregate salary data, though it may not be readily accessible to the public in a simple average format. You'd likely need to search their website or contact them directly.
* Salary.com, Glassdoor, Payscale, etc.: These websites compile salary information from self-reported data and may provide an estimate of the average elementary school teacher salary in Oklahoma. Keep in mind that these are estimates and may not be perfectly accurate.
* Individual School District Websites: Many school districts in Oklahoma post salary schedules or information on their websites, though compiling this information across all districts would be a time-consuming task.
Because of the variability and lack of a single, publicly accessible, definitive average, I recommend searching the sources listed above for the most up-to-date estimates. Expect to see a range rather than a precise average number.