GRANDPA SCHOOL: Two "retired" SPS principals have teamed up to lead Arlington Elementary School this fall as interim principals while bringing their signature warmth and humor to the halls. Affectionately known as “the grandpas,” Steve Barnes - veteran of multiple schools and most recently at Lidgerwood Elementary School - and Mike Crabtree - also a veteran of multiple schools and most recently at Moran Prairie Elementary School - are embracing the title with pride, proving that experience, comm