Codecademy export

app.js

class School {
  constructor(name, level, numberOfStudents) {
    this._name = name;
    this._level = level;
    this._numberOfStudents = numberOfStudents;
  }
  get name(){
    return this._name;
  }
  get level(){
    return this._level;
  }
  get numberOfStudents(){
    return this._numberOfStudents;
  }
  set numberOfStudents(newNumberOfStudents) {
    if (newNumberOfStudents.isNaN()){console.log('Invalid input: numberOfStudents must be set to a Number.');}
    else {this._numberOfStudents = newNumberOfStudents};
  }
  quickFacts(){
    console.log(`${this._name} educates ${this._numberOfStudents} students at the ${this._level} school level.`)
  }
static pickSubstituteTeacher(substituteTeachers){
    const randInt = Math.floor(Math.random() * substituteTeachers.length);
   return substituteTeachers[randInt];  
  } 
}

class PrimarySchool extends School {
  constructor(name, numberOfStudents, pickupPolicy, averageTestScores){
    super(name, 'primary', numberOfStudents);
    this._pickupPolicy = pickupPolicy;
    this._averageTestScores = [];
  }
  get pickupPolicy(){
    return this._pickupPolicy;
  }
  get averageTestScores(){
    return this._averageTestScores;
  }
  getAverageTestScore(){
    //let testScoresSum = this._averageTestScores.reduce((currentSum, scores) => currentSum + scores, 0);
    //let lengthOfTestScores = this._averageTestScores.length;
    //return testScoresSum /= lengthOfTestScores;
//???? doesn't work
  return this._averageTestScores.reduce((a, b) => {a + b}) / this._averageTestScores.length;
  }
  addScore(getAverageTestScore){
  this._averageTestScores.push(getAverageTestScore);
  }
}

class HighSchool extends School {
  constructor(name, numberOfStudents, sportsTeams){
    super(name, 'high', numberOfStudents);
    this._sportsTeams = sportsTeams;
  }
  get sportsTeams(){
    return this._sportsTeams;
  }
}

const lorraineHan = new PrimarySchool('Lorraine Hansbury', 514, 'Students must be picked up by a parent, guardian, or a family member over the age of 13.');
lorraineHan.quickFacts();
lorraineHan.averageTestScore;
lorraineHan.addScore(9.0);
lorraineHan.addScore(9.9);
lorraineHan.addScore(8.9);
lorraineHan.addScore(9.1);
console.log(lorraineHan.averageTestScores);
console.log(lorraineHan.numberOfStudents);
const subTeacher = School.pickSubstituteTeacher(['Jamal Crawford', 'Lou Williams', 'J.R. Smith', 'James Harden', 'Jason Terry', 'Manu Genobli']);
console.log(subTeacher);
const alSmith = new HighSchool('Al E. Smith', 415, ['Baseball', 'Basketball', 'Volleybal', 'Track and Field']);
console.log(alSmith.sportsTeams);
console.log(alSmith.numberOfStudents);