No. It is up to you who you invite.
For a graduation party, it's best to invite close family members, friends, and mentors who have supported you throughout your academic journey. Consider including classmates and colleagues who have shared experiences with you. You might also invite teachers or professors who made a significant impact on your education. Ultimately, aim for a mix of people who will celebrate your achievement and make the event memorable.
* It depends why they didn't invite you. If it was a small graduation party and a very few people there or you live out of town then yes, send a gift, but if they simply left you out on purpose then don't give a gift.
Well, I wouldn't... but I guess you don't HAVE to
That's not a legit question, the person that invited you would decide that.
It is not rude to send someone an invitations & announcements package and not invite them to the party itself. Especially if they are across the country.
If the ex brother-in-law is a personal friend, there's absolutely no reason why he shouldn't be invited. The graduate decides who she/he wants at the ceremony and shouldn't be coerced either way by family members.
Friends and family
graduation
It is proper to invite only the children that will be part of the wedding, or to invite only immediate family member's children, ie. nieces & nephews. However, it is not appropiate to invite some family's children and not others, or some friend's children and not others.
you invite your family over and have a party
An online nike store for employees that allows them to get discounts in for employees only and they can invite there family to use it... they can also get into trouble if they invite someone not in there immediate family
All police academies require students to be at least 21 upon graduation.