Manila Standard. The Department of Education (DepEd), through Education Secretary Sonny Angara, conducted an observation of Tondo, Manila's Lakan Dula High School,. Education Secretary Sonny Angara on Wednesday inspected Lakan Dula High School in Manila, which he called a “model school” for implementing safety measures. MANILA, Philippines — Education Secretary Sonny Angara got firsthand insight into how a large urban campus can maintain a zero-incident safety record on Wednesday as he inspected.