Thanks @Joe, I just have to promote my robotics class around January instead of spending my spare time coding! I just needed 4 more students, but I didn't know I just needed 4 more student.
When I have 15 Photons running in the classroom there is always 1 or 2 random photons that have bad wifi, so I thought, get a class set of Argons and the Mesh would solve any random wifi issues. That led to the very long and frustrating blog at: (Careful may take several hours to read, surprised other Particle employees haven't warned you about me 
)
Short answer, I am still waiting to be able to connect several Argons to one Mesh network to solve my random classroom WiFi issues. At least now I have a full year that I can wait.
Anyway all is not lost I am teaching a group of hand picked grade 7's to 9's how to make a Machine Learning Robot car. That should be fun.
cell phone that does the machine learning goes in the white holder in the front.