If you want to contact me, you just have to send your owl with a letter and I will answer to you as soon as my busy schedule allows me. In case your owl is sick or it is so old that it can't fly anymore (or if you are just muggles, which is awesome), you can always contact me via email (ewillinski@mursd). Anyway I remind you that if there is no wifi at Howgarts or if I delay too much writing back, you can always send me a note with your kids.
My best wishes,
Professor Albus Percival Wulfric Brian WillinskiDumbledore, Order of Merlin (first class), Headmaster of Hogwarts School of Witchcraft and Wizardry, Supreme Mugwump of the International Confederation of Wizards, and Chief Warlock of the Wizengamot.