Hi @clangstaff,
We are a FrogLearn only school, we had Frog3 running in the background but made the decision to switch it off. Very little had been done with Frog3 so we didn't need to worry about losing lots of pages. I created a CSV file and you can do select force change from that. I used a guide that @Edd created to help me with the parental roll out, it is very useful. You can do individual account changes using the USERS app and there is an option on there for force password change too.
Matt
FrogParent - Setup Guide.docx