The DLSZ High School Girls Team bagged the Division 1 Championship crown of the Inter-Scholastic Tennis Association (ISTA) tournament during the finals held last February 26, 2011 at the Colegio San Agustin Makati Tennis Complex. The record breaking team was composed of International Junior tennis circuit players Katrina O. Orteza (DLSZ 2014) and Patricia Joy O. Orteza (DLSZ 2012) as well as DLSZ varsity team members Alexandra Mai C. Reasonda (DLSZ 2012) and Noelle Fidelis Villacorta (DLSZ 2011).