those teachers that did this should be arrested, I don't care if it was "natural", there are side effects to anything, and the patches were for adults, not little people. Valerian is useful but should be used with caution, it is hell on the liver if taken too often. In old herbal books and medical dictionaries, it is mentioned as good for mania, hysteria, and for insomnia that lasts for a long time. I grow it, and plan to harvest the root, dry it and have it in case it is needed at some point. A kid cannot even be given a Tylenol in school without a note from the parent. If you cannot handle kids being all excited and sometimes a handful, don't go into the field.