09. Graduation pt.2 - while - loops

function graduation(input) {
    let name = input.shift();
    let excluded = 0;
    let isExcluded = false;

    let counter = 1;
    let sum = 0;

    while (counter <= 12) {
        let grade = Number(input.shift());
        if(grade < 4.00) {
            excluded++;
        }
        if(grade >= 4.00) {
            sum += grade;
            counter++;
        }
        if(excluded >= 2) {
            isExcluded = true;
            break;
        }
    }
    if(isExcluded == false) {
    let average = sum / 12;
    console.log(`${name} graduated. Average grade: ${average.toFixed(2)}`);
    } else {
        console.log(`${name} has been excluded at ${counter} grade`);
}
}