Hello, 

I am just creating a company account through Quickbooks. We are a design firm that bills by phases, progress, and fixed amounts. In our Items list I have the different phases broken down. However, I keep seeing people talking about identifying something by a class. 

First, what is the difference between a class and a list item? Isn't Quickbooks capable or running a report based on either a class or a list item to see Profit and Loss? 

My question is: can my list items be the same as my classes? For instance: 

Transportation: Design

Transportation: Project Management

Transportation: Marketing

Transportation: Construction Admin

Education: Design
Education: Project Management (and so on)

Can all of those be both a list item and a class? 

Or should they be separated by class, items, and types? How do you tell the difference between which one should be?