The measure was filed last year but didn't make it onto the ballot.
The proposal is very similar this year, but Casas says that the state has a more concrete evaluation program in place now, which means that the time is right to end tenure.
Does she expect criticisms that this initiative would be hostile to teachers?
"Saying this is demonizing teachers is misguided," she says, arguing that there's an assumption that this is based on past evaluation models regarding the number of children in the classroom at grade level. "That would be scary. But that's really not what this is.... How do we accurately measure the value that a teacher is adding to a student's life while they are in that classroom?"
Of the KKK comment Sinquefield made -- raised by an opponent in the Beacon piece -- she adds, "I don't think that that's a concern. We want to stay focused on what is best for kids. Mr. Sinquefield has apologized for that. We are all ready to focus on kids."
Here's the full petition.