SABIS: thoughts?

Hi friends,

Just wondering if any of you have worked with the SABIS school system? I am considering a position (6th grade ELA) at a SABIS school, and I know literally nothing about it or the curriculum they use, other than the crash course sort of things I just researched today. I've only ever taught in public schools that used CCSS or similar, so I would love to know what real teachers' takes on it are! :)

So thoughts--for real. Advantages/disadvantages? Likes/dislikes? Things to look out for? Comparison to CCSS or IB? How much flexibility do you have within the schools? Things like that! :)