Private
It is difficult. Then again, the behavior of those your age is sometimes incomprehensible to me. They have grown up using things that I only encountered later in life, and have developed their own distinctive subculture. Muggle or magical, it is all the same.
But I think you are exactly right. A gentleman should do his best to maintain his own standards of behavior, even while trying to fit into a new and different place. I hope I never live to see the day honor and courtesy go completely out of style
Come by my house a little before noon. I'll set a luncheon for us so we can become better acquainted before we go for to face the twin rigors of Arithmancy and spellwork.