Congratulations to your son on moving up a grade! Well, in my day, this wasn't done. I don't remember exactly when they started having ceremonies for everything: when they moved from preschool to elementary school, when they entered the first year of high school, etc. Haha, in my day I remember that the only celebration with a ceremony was high school graduation. But I understand that it's very exciting for children and it's a nice thing, although, of course, each family's economic situation plays a role.