Create simple object from nested array of objects of arrays

First you will have to iterate over the data

Then interate over institue courses

Then iterate over students assigned to those courses

Will look something like that

const model = [];

 for (let i = 0; i < jsonParserData.institutes.length; i++)
  for (let j = 0; j < jsonParserData.institutes[i].courses.length; j++)
    for (let k = 0; k < jsonParserData.institutes[i].courses[j].students.length; k++) {
      model.push({
        instituteName: jsonParserData.institutes[i].name,
        courseName: jsonParserData.institutes[i].courses[j].name,
        studentFirstname: jsonParserData.institutes[i].courses[j].students[k].firstName,
        studentSurname: jsonParserData.institutes[i].courses[j].students[k].surname,
      });
      jsonParserData.institutes[i].courses[j].students[k].attributes.map((item) => {
        switch (item.option) {
          case "apreciation":
            model[model.length - 1].apreciation = item.value;
            break;
          case "finalGrade":
            model[model.length - 1].finalGrade = item.value;
            break;
          case "behaviour":
            model[model.length - 1].behaviour = item.value;
            break;
          case "completenessOfStapler":
            model[model.length - 1].completenessOfStapler = item.value;
            break;
        }
      });
    }

Or using newer syntax

for (let institute of jsonParserData.institutes)
  for (let course of institute.courses)
    for (let student of course.students) {
      model.push({
        instituteName: institute.name,
        courseName: course.name,
        studentFirstname: student.firstName,
        studentSurname: student.surname,
      });
      student.attributes.map((item) => {
        switch (item.option) {
          case "apreciation":
            model[model.length - 1].apreciation = item.value;
            break;
          case "finalGrade":
            model[model.length - 1].finalGrade = item.value;
            break;
          case "behaviour":
            model[model.length - 1].behaviour = item.value;
            break;
          case "completenessOfStapler":
            model[model.length - 1].completenessOfStapler = item.value;
            break;
        }
      });
    }