Dear Ms. Callanan,
Thank you for posting your request on History Hub!
In addition to the resources you mentioned, we suggest that you contact the Louisiana State Archives or the Sabine Parish Library to inquire about any records they may hold regarding the Sabine Parish School District.
We hope this is helpful. Best of luck with your research!
The following might interest you.
History of Sabine Parish, Louisiana,
From the First Explorers and Settlers to the Present
CNC, You might want to take a look at the Rosenwald Schools. One was built in Sabine Parrish
The web sitebelow has information that could be of help..