Schoolyard graffiti

I decided to take a brisk walk around town for a change this morning.  It was quite early but there were a few other people around enjoying the early morning sunshine.  I spotted this graffiti, all stencils I think,  on a retaining wall in the entrance to the high school.  There are others that I might use for future blips.  
It's a lovely afternoon and I'm off to enjoy a bit of Shinrin-yoku.