This document outlines a method for systematically comparing two writing systems. It discusses 1) the different types of writing systems, including alphabetic, syllabic and logographic, 2) factors that affect learning like regularity of fit between symbols and sounds, and 3) a step-by-step process for comparing two systems ranging from those that use the same alphabet to those that are completely different. The goal is to understand similarities and differences in order to better identify learning challenges and improve teaching approaches.