First I searched online for retirement parties. Let me tell you that there isn't much to be found in terms of retirement parties! So, I found a cute baby shower and graduation party that had a school theme and used those for inspirations.
I made this invitation using Photoshop Elements. I am still learning how to use the program, but thought the invites turned out cute! I then printed them at Walmart as just regular old photos and mailed them off. It was much cheaper than ordering fancy invitations!

I also made coordinating decorations such as the napkin rings, bottle labels, and cupcake toppers:



My SIL, Kristin, helped me get crafty with all the decorations. Even John helped me make the tastiest peanut butter rice kripie treats. (I got the recipe at Big Mama, but just don't feel like searching her blog for the exact post. If you find it, they are AMAZING!)
For the main food table, we tried to think of types of food that would be served in a cafeteria. So, we went with chicken fingers, pizza, corn, mashed potatoes, rolls, etc. It was super yummy! We used some old math textbooks I had to decorate along with the traditonal red apples and teacher-y pencils!
Yummy cupcakes and a cute carved watermelon fruit bowl was in a seperate room.
For favors, we had the typical high school snacks- nutty bars, starcrunch, cookies, rice krispie treats, and oatmeal creme pies.
Last, but not least, we had our drink station with personalized water bottles, sodas, and 'adult' beverages.
Hopefully Diana had a great time with all of her friends! I know she is ready for her exciting new life as being a retired lady!