State officials say monitoring compliance is up to local school district authorities.
School officials expect the FDA to approve the COVID-19 vaccine for 5- to 11-year-old children in coming weeks.
The group runs Singleton Charter School and was granted a restraining order that prevented the district from closing the school over the summer.
The resolution was introduced by J.C. Romero, who grew up in a non-English speaking household in New Orleans.
The board also introduced a new anti-retaliation policy to protect parents and school staff.
The warning letter, an elevation from a previous and less serious warning that was not posted publicly, says the school must complete a review of all special education files by early next year.
COVID-19 cases in district schools remain low.
NOLA Public Schools reports Singleton officials said the employee has been terminated.
The decline follows a small uptick in cases after Hurricane Ida.
James Singleton Charter School, which has faced repeated citations for academic and financial management problems, is one of the schools on the list.