We agree entirely. Feelings matter for motivation and can underpin performance. But the rational view is that, at the end of the day, you must have an objective

We agree entirely. Feelings matter for motivation and can underpin performance. But the rational view is that, at the end of the day, you must have an objective measure of performance, devoid of opinion and emotion. The kids' feelings matter when motivating them to perform, but when it comes time to evaluate said performance, feelings cannot matter one wit. If they do, you are no longer measuring performance, you're measuring something else.