School Publications The Sentinel The Sentinel is the South Lakes HS online student-run newspaper. Visit the sentinel online. You may contact us at 703-715-4617 or at email@example.com. You may also request Sentinel coverage. Yearbook Contact Information: Email: SLfreebirdYBK@gmail.com Twitter: @SLfreebirdYBK Instagram: @SLfreebirdYBK Ordering Yearbooks: Order online at www.yearbookordercenter.com with school code 13550 OR with your school account on MySchoolBucks.com.