That is not the case - there will be no up or down vote on the agreement.
Whatever Mulgrew agrees to with the NYCDOE will become the new evaluation system that you will work under.
The MORE caucus is demanding Mulgrew and the UFT put the agreement to a membership-wide referendum.
They have created a petition here that you can sign if you think the membership ought to get a say on the new evaluation agreement.
Here is the text of that petition:
I urge you to sign that petition and send it to all your colleagues.
It may too late to stop the impending UFT sell-out on evaluations, but if thousands of teachers sign a petition calling for a membership-wide referendum, it will give Mulgrew and the leadership around him pause.