The greatest reward a teacher can receive is to no longer be needed. The learners that I have mentored since last year have taken off. Of course, this does not mean that I am not still part of the team, which I most certainly am as Scrum Master.
However, they have learned to become independent of me: making plans, getting on radio shows, communicating with local companies and getting interviewed for TV (see video above). All of these things are happening without me in the loop. I did not even know they had made it on to the radio until they told me the following day.
Again, this is the greatest achievement for a teacher – to no longer be needed – which frees up my time to build other learners to this level of independent learning. Is this not the learning that we all want to see?