College.py

def get_highest_score(test_id):
    test_attempts = db.session.query(TestAttempt).filter_by(test_id=test_id)
    scores = []
    if test_attempts.count() < 1:
        return {'max_score': 0}
    for each in test_attempts:
        user_id = each.user_id
        test_id = each.test_id
        if each.is_complete:
            k = get_college_test_attempt_score(test_id, user_id)['score']
            scores.append(k)
    if len(scores):
        max_score = max(scores)
        return {'max_score': max_score}
    return {'max_score': 0}