Thank you both; this is what I was looking for. Though I think I will lean towards the SSC symbol because I like the idea of filling in the dots to mark her progress. Can use as a reword, love it.

Thanks again.

But, if I’m in this boat then I know that there are others out there in the same, so why not keep this going. Anyone else got some good ideas for glyphs or symbols to mark a trainee?