La. Stat. tit. 41 § 722
The treasurer of the parish school board, on the receipt of the notes due and given for the sixteenth sections, shall immediately notify the principal and his sureties, in writing, of the amount of the notes, principal and interest due and unpaid; provided the lands for which the notes were given are still in the possession of the original purchaser. If the lands are in the possession of other parties, the possessor shall also be notified of all the demands, principal and interest, against the lands, and if all demands against them are not satisfied within thirty days from the notice, the treasurer of the parish school board shall turn over the notes to the district attorney for the district, or other attorney selected by the school board, for suit. The notice shall serve as a bar to prescription, which shall only begin to run from the service of the notice.
La. R.S. § 41:722