sixie

plural sixies

1. educationA seventh-grader at Boston Latin School.

   We can hum the "1812 Overture" (complete with howitzer) from memory, we've got streets named after Mendelssohn and Liszt, and we knew Lenny Bernstein when he was a sixie at Latin.

   2006, John Powers, The Boston Handbook, page 94

   2 more examples

   Elena went on to Boston Latin alone, and Genette got into a crowd in her middle school. Even though Elena was in seventh grade, at Boston Latin she was called a sixie, and they were the bottom of the heap.

   1999, Marge Piercy, Three Women

   I'm particularly aware of Boston State because when I was a sixie (seventh grader) at Boston Latin in the Fall of 1983, the sign on the building of the old Boston State was around the corner from BLS.

   2017, Matthew J. Fraser, Critical Infrastructure for Children, page 6