In response to swirling confusion on this blog and other local parenting sites, here is the official, on the record, DOEsibling enrollment policy for prospective kindergarten students. Enrollment priority, in descending order:

"Zoned students with siblings,

Zoned students without siblings,

 Non-zoned students with siblings - first in district, then out,

 Non-zoned students without siblings - first in district, then out."