Parents at Coconut Grove Elementary School are calling for the ouster of Principal Eva N. Ravelo this week after she told a parent in an e-mail to "eat sh-- and die." The controversy, which is now under review by the Miami-Dade County school district's central office, started Monday. Abigail DuBearn, a member of the school's Educational Excellence School Advisory Committee, or EESAC, had asked Ravelo and other council members whether student representatives of the committee "could be notified today and be invited to attend and participate'' at Monday's meeting. Ravelo, 44, then replied to DuBearn's e-mail with the message: "Advise...