Firstly, that if you don't sit the smallest children at the front of the room as a matter of course, that you sit him with some steady young man who will keep an eye on him and make sure he isn't mistreated by his seniors. That stocky lad would do - Hanscom, was it? Secondly, that he isn't made to use any muggle technologies. I'll send him with a slate, and with pen and parchment, and any books he needs. If you do want to use muggle computers and moving pictures and that sort of thing, write to me and I shall keep him at home that day. I don't mean to constrain your teaching, but to let him join you when it is allowable for him to do so. Thirdly, if he's poorly-behaved, report it to me and let me deal with the matter.
What is that in ounces? Never mind, if you don't know it. Less than a pint shan't be a problem. If I give it, I'll have your word that it is to be used only to search for whatever it is that will help Siri, and not for any other reason?