You will need to adjust these recipes based on your anticipated guest list. I always prefer to prepare extra food to be on the safe side. As long as you only serve a little food at a time and keep the rest refrigerated until needed, you can eat the leftovers at a later date.
Menu for a Graduation Buffet
Sherbert Punch - You might want to make several ice rings for each time you re-stock the punch bowl.
Croutons with Tapenade - Don't top the croutons with the tapenade until ready to serve.
West Indian Bean Dip - Serve this with tortilla chips or cut-up vegetables.
Slow Grilled Beef Ribs - Marinate all the ribs in advance, but place them on the grill in smaller batches so that freshly cooked ones are always available.
Peanut Butter and Jelly Sandwiches (for a young graduate and friends) Cut out with star cookie cutters.
Mixed Fruit Salad - Top with slices of star fruit (carambola.)
Star Graduate Cupcakes - Here is an easy recipe from Wilton for for graduation cupcakes. Make a whole batch of these for a fun presentation of your theme.
Sugar Cookies - Cut out with star shaped cutters, of course!
An abundance of assorted cold beverages.