albayalde's presidency was superseded by ernesto m. de chavez in 1989. courses in english language, elementary and secondary educations, and computer science were made available the subsequent year. simultaneously, pbmit spearheaded the dual training system or dts that was intended for aspiring technicians. dts was conducted on a trimester basis; classes were held four days a week in industry and two days in school. by 1991, two more courses in development communication and biology were offered. starting from 1993, the laboratory school adopted the technology based-curriculum to conform with pbmit's science education program. together with philippine science high school and quezon city science high school, the three were the first secondary schools in the philippines to adopt the aforementioned curriculum. in 1994, an extension campus was opened in balayan with welding fabrication and automotive, electrical, and electronics technologies as its premier courses.