If you are planning a graduation party, invitations should be sent at least three weeks prior to the party. Since most graduation parties are informal, these invitations can be found at any store specializing in stationery.
Be sure to write who the party is in honor of on the invitation if a space is not provided for this information.
You may also want to write R.S.V.P. along with your telephone number at the bottom of the invitation to make it easy for guests to respond. Another option is to write regrets only rather than ask everyone to respond.
There are very few rules for graduation parties. Make the event whatever you want it to be. It can be as informal as a picnic in the park or as formal as renting a banquet hall for a dinner dance.
One rule you must follow – never send your invitations before you are 100 percent certain you will graduate.