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For the 2025-26 school year, there are 6 private high schools belonging to Independent Schools Association of the South West (ISAS) serving 3,719 students in Louisiana. You can also find more schools membership associations in Louisiana.

The top ranked private high schools belonging to Independent Schools Association of the South West (ISAS) in Louisiana include Metairie Park Country Day School, St. Martin's Episcopal School, and Louise S. McGehee School.

The average acceptance rate is 79%, which is lower than the Louisiana private high school average acceptance rate of 80%.

67% of private high schools belonging to Independent Schools Association of the South West (ISAS) in Louisiana are religiously affiliated (most commonly Catholic and Episcopal).