Graduation 100/100

function graduation(input) {
    let index = 0;
    let name = input[index];
    index++;

    let yearCounter = 1;
    let allGrades = 0;
    let badGradesCounter = 0;
    let outOfSchool = false;

    while (yearCounter <= 12) {
        let annualGrade = Number(input[index]);
        index++;

        if (annualGrade < 4) {
            badGradesCounter++;

            if (badGradesCounter > 1) {
                outOfSchool = true;
                break;
            }
            continue;
        }
        allGrades += annualGrade;
        yearCounter++;
    }
        let averageGrade = allGrades / 12;
        if (outOfSchool) {
            console.log(`${name} has been excluded at ${yearCounter} grade`);
        } else {
            console.log(`${name} graduated. Average grade: ${averageGrade.toFixed(2)}`);
        }
}