Does “send all scores” mean “you are ethically obligated to submit scores from every test you take, including tests taken after you’ve already submitted scores to our college”?
Or does it mean, “When you submit scores to our college, you must submit the scores for every test taken up to that time”?
If it’s the former, the solution to the OP’s kid’s problem is obvious. Send the scores now. Take the test again. Don’t submit the new score if you don’t like it.