The top reported proficiency rate is 38% in English language arts. The lowest is 10% in Science.
Original Research by School Decision on Grand Isle High School
Grand Isle High School serves students from pre-kindergarten through twelfth grade on a narrow barrier island at the southern edge of Louisiana. It is a regular public school within the Jefferson Parish Public School System, and it stands out first for its setting. Grand Isle itself is a small fishing and tourism community accessible only by a single highway causeway, with a population that has declined over recent decades. The school is the only public school on the island, meaning it functions as the neighborhood school for every school-aged child in town.
The student body is small. Enrollment is modest for a PK-through-12 school, and the student composition is predominantly white, with a substantial Hispanic minority and a small number of American Indian or Alaska Native students. A significant share of students qualify for free or reduced-price lunch. Data on students with individualized education programs and English learners was not reported, so a parent may want to ask the school directly about special education and language support services.
State testing results from the 2024-2025 school year provide the most recent academic picture. In English language arts, a notable share of students scored at proficient or above, though the majority did not reach that bar. In mathematics, the share of students at proficient or above was considerably lower. Science and social studies proficiency rates were lower still, with only a small fraction of students meeting the proficient threshold. These results apply to grades three through eight, as those are the tested grade bands for Louisiana’s LEAP 2025 assessment. Because the school is small, the total number of students tested in each subject is also small, which means a single student’s performance can move the reported rate meaningfully. A family may want to ask the school how it supports academic growth across subjects, particularly in math and science. No state testing data was available for high-school-level end-of-course exams, so the picture of academic performance in grades nine through twelve is incomplete.
The school operates within a district that has been undergoing significant change. The Jefferson Parish school board approved a consolidation plan in 2023 that has involved closing and merging schools and redrawing attendance zones, partly in response to declining enrollment and aging facilities. The district also approved budget cuts for the 2024-2025 school year that include reductions in central office staff and transportation services. Grand Isle High’s remote location may insulate it from some of these changes, but families should note that the district is actively reshaping its school landscape. On the positive side, the district adopted a new evidence-based reading curriculum in the 2023-2024 school year and received a federal grant for STEM education in 2023, though how these initiatives reach a small island school is not documented in the available information.
Housing in the Grand Isle area carries a value that is above the statewide benchmark. The community has faced repeated hurricane damage, most notably from Hurricane Ida in 2021, and recovery and rebuilding are ongoing. Coastal erosion and storm protection are long-term concerns for the island. These factors make the housing market distinct from mainland Jefferson Parish and may influence a family’s decision about living in the community year-round versus using a vacation property.
Because no comparison data was available that includes Grand Isle High School alongside other district schools in Jefferson Parish, it is not possible to say how this school’s results stack up against its neighbors. The data set used for comparisons was too small to compute relative performance. A family looking for a school with strong proficiency across multiple subjects will likely want to examine the school’s own results carefully and speak with staff about academic expectations and support. For a family already living in Grand Isle or considering relocation to the island, this is the only public school option, and the small setting, combined with the community’s isolation and tight-knit character, will define the experience as much as any test score.
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