The Chicago Teachers Union membership has voted overwhelmingly to authorize a strike. 88% of their entire membership voted yes and 96% of those who cast a ballot authorized a strike. Those are very impressive percentages no matter how you slice it.
As for demands, the CTU put out a statement. This is at the top of the list:
(1) Improve the teaching and learning conditions by reducing standardized testing, eliminate time-sucking compliance paperwork, and restore professional respect and autonomy to teachers on matters like grades. These improvements cost nothing;
These should be among our top demands here in NYC too.