I'd just gotten a scone from Starbucks and it was in a paper bag, so took the paper bag and picked up the needle with it, then took it to the school and security disposed of it.
I certainly didn't want to touch it, but there are a lot of kids who pass by that street and so I didn't see an alternative. I had to get the kid I worked with to school so I couldn't call the cops and wait for them to come get it; besides, there are a lot of serious problems in that neighborhood (shootings, etc. - police cars w/full sirens pass by 3-4 times an hour 24/7) so it could have been quite awhile before they came to deal with a needle.