You could talk to the organization you're working for about what format they prefer. Some theatres have specific preferences about format and style regarding bios. (For instance, some places prefer just a no-nonsense list of shows, or a more narrative format structured in full sentences). Take a look at an old program from this company.
Here's an example bio format-
Maribeth (Stage Manager) is happy to be returning to X Theatre, where her previous productions include Show A, Show B, and Show C. Other regional credits include Show D at Y Theatre, and Shows E, F, and G at Z Theatre. She is a graduate of ____ University.
You only get so many words- choose the shows that you want to use to express your experience. If you only have college experience, include it. If you have professional experience, I would include that first. As you get more experience, phase out the college shows. I like to include my alma mater but don't include my graduation date.