Graduation

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

    let allGrades = 0;
    let badGrade = 0;
    let yearCounter = 1;

    let isExcluded = false;

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

        if (annualGrade < 4) {
            badGrade++;
            if (badGrade > 1) {
                isExcluded = true;
                console.log(`${name} has been excluded at ${yearCounter} grade`);
                break;
            }
            continue;
        }
        allGrades += annualGrade;
        yearCounter++;
    }
    if (!isExcluded) {
        let averageGrade = allGrades / 12;
        console.log(`${name} graduated. Average grade: ${(averageGrade).toFixed(2)}`);
    }
}