California Staff Organization – CSO is the union of the professional staff who support the 310,000 members of California Teachers Association.

We Are CSO

We’re your partners in advocacy. We’re the best union staff in the country.
We’re working together to build a stronger CTA.

We’re also rebuilding our website. Stay tuned for updates.

Upcoming Events

Oct. 28: Virtual Rep Council
Nov. 18: Rep Council
Nov. 20: CSO-CTA Bargaining Session 1
Dec. 8: CSO-CTA Bargaining Session 2
Dec. 11: Rep Council
Jan. 8: Rep Council
Jan. 28: CSO-CTA Bargaining Session 3
Feb. 6: CSO-CTA Bargaining Session 4
Feb. 13 – 15: Annual Meeting
May 14: Rep Council
June 24: Rep Council

Updates from our Facebook page

This message is only visible to admins.
Problem displaying Facebook posts. Backup cache in use.
Click to show error

Error: The user must be an administrator, editor, or moderator of the page in order to impersonate it. If the page business requires Two Factor Authentication, the user also needs to enable Two Factor Authentication. Type: OAuthException