public IActionResult DeleteCatalogueGrade(int schoolId, int catalogueId, int gradeId)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
Grade grade = _schoolRepository.GetCatalogueGrade(gradeId, schoolId, catalogueId);
if (grade == null)
{
return(NotFound());
}
_schoolRepository.DeleteCatalogueGrade(grade, schoolId, catalogueId);
return(NoContent());
}