Good question Ozzie. In the start of 2018 we mostly focussed on getting into schools and on the surveys (metrics 1 and 2 above), because they were our first hurdles and we were very uncertain on how these would go until we started the project.
However that meant we didn’t optimise our workshops for engaging students long term (metric 3) for several months after starting the project. That meant we weren’t confident in making decisions based on the first indications that we were not meeting metric 3, and ran the project for several more months as a result. If we had planned our long term engagement strategy at the start of 2018 and set success criteria earlier we could have learnt what we needed to in less time.