TL;DR: Disaster Readiness and Risk Reduction is an 80-hour Senior High School core subject in the 2016 curriculum, with a prerequisite of Grades 3 to 10 Science and ten content areas running from the concept of disaster through earthquake, volcano, geological, hydrometeorological and fire hazards to disaster risk reduction policy under Republic Act No. 10121. It is not a STEM specialised subject, whatever most strand guides say: DepEd Order No. 21, s. 2019 lists it in Table 2.12 as a special core curriculum subject that STEM learners take instead of Physical Science, alongside Earth Science. Under DepEd Order No. 017, s. 2026 the subject no longer exists by name. Its content now sits in Earth and Space Science 4, an elective, which means it is no longer compulsory for anyone.
This is a subject people search for two ways: students wanting to know what is on the syllabus, and teachers wanting to know whether it still exists. Both answers are below, taken from the curriculum guide and the orders rather than from summaries.
What the Subject Is
The curriculum guide is short and specific. Grade 11 or 12, 80 hours per semester, prerequisite Grades 3 to 10 Science, and a one-sentence subject description: the course "focuses on the application of scientific knowledge and the solution of practical problems in a physical environment," designed "to bridge the gap between theoretical science and daily living."
That framing explains the performance standards, which are unusually practical for a science subject. Learners are not asked to write essays about hazards. They are asked to conduct hazard hunts of exposed elements, develop family emergency preparedness plans for earthquakes, volcanic eruptions, geological hazards and fires, run safety drills, build a community preparedness plan, and prepare survival kits and materials for their own household and for public advocacy.
The Ten Content Areas
The guide organises the subject into ten content areas across two quarters.
Quarter 1
- Basic concept of disaster and disaster risk. What a disaster is, what disaster risk is, the nature and effects of disasters, and how an event becomes a disaster. Learners analyse disasters from physical, psychological, socio-cultural, economic, political and biological perspectives.
- Exposure and vulnerability. The physical, social, economic and environmental elements that can be exposed to hazards, why certain sectors of society are more vulnerable than others, and why certain structures are more vulnerable to specific hazards.
- Basic concept of hazard. Defining hazards, types of hazards, and their impact on different exposed elements.
- Earthquake hazards. Ground shaking, ground rupture, liquefaction, earthquake-induced ground subsidence, tsunami and earthquake-induced landslide, plus reading earthquake hazard maps and recognising the natural signs of an impending tsunami.
- Volcano hazards. Lahar, ash fall, pyroclastic flow, ballistic projectile, volcanic gases and lava flow, plus the signs of an impending eruption and how to read volcano hazard maps.
Quarter 2
- Other related geological hazards. Rainfall-induced landslide and sinkhole.
- Hydrometeorological hazards. Typhoon, thunderstorm, flash flood, flood, storm surge, El Niño and La Niña, plus using available monitoring tools.
- Fire hazard. The fire triangle, causes of fires, phases of a fire emergency, and basic response and evacuation procedures.
- Concept of DRR and DRRM. Key principles, community-based disaster risk reduction and management for preparedness, emergency plans, monitoring and evaluation, early warning systems, and survival kits.
- What to expect between the State and the citizens. Republic Act No. 10121, the Philippine Disaster Risk Reduction and Management Act of 2010, its implementing rules and regulations, and the government projects and programmes available to citizens.
The competency codes run from DRR11/12-Ia-b-1 to DRR11/12-IIi-j-49, which is a useful check if you are matching a module or test item to the official competency.
Who Actually Took It
This is where most online explanations go wrong, so it is worth stating precisely.
Under DepEd Order No. 21, s. 2019, Annex 2, paragraph 44, Physical Science covers basic Physics and Chemistry topics and Earth and Life Science includes basic Biology topics. STEM learners already cover that ground in General Physics, General Chemistry and General Biology. To avoid repetition, the order says, "students in the STEM Strand will instead take the following core curriculum subjects: Earth Science and Disaster Readiness and Risk Reduction."
Table 2.12 that follows is headed Special Core Curriculum Subjects in the STEM strand. DRRR is in that table. It is not in Table 2.11, which is the STEM specialised subject list. The distinction is not pedantry: it changes whether the subject is core or strand-specific, and it is the reason DRRR also turns up in the General Academic Strand list in Table 2.14, where the annex describes it as "a subject from the special core curriculum subjects for the STEM Strand."
So: compulsory for STEM, present in GAS, and not taken by ABM, HUMSS, Sports, Arts and Design or TVL learners, who took Physical Science and Earth and Life Science instead. The full picture is in our specialised subjects by strand guide, and the strand context in our STEM strand guide and GAS strand guide.
Where the Subject Went
DepEd Order No. 017, s. 2026, the Strengthened Senior High School Curriculum signed 4 June 2026, does not contain a subject called Disaster Readiness and Risk Reduction. We checked Annex A, which lists every elective in both tracks. It is not there.
What the order does contain is Annex F.2, an equivalency matrix used to credit learners transferring between the two curricula. In the Science, Technology, Engineering and Mathematics section it pairs "Earth Science, and Disaster Readiness and Risk Reduction" against "Earth and Space Science 1, Earth and Space Science 2, Earth and Space Science 3, and Earth and Space Science 4," marked CREDITED.
Following that through to the curriculum guides, the disaster content is concentrated in Earth and Space Science 4. Its DepEd guide states that the course "examines how natural hazards arise from geological and hydrometeorological processes and how these hazards can become disasters depending on the exposure, vulnerability, and capacity of communities," and that learners "analyze disaster risk reduction and management (DRRM) approaches implemented at community and national levels, including the provisions of Republic Act No. 10121." Hazard maps, geospatial data and historical records all appear. Climate change sits one course earlier, in Earth and Space Science 3.
The Change That Matters
Earth and Space Science 4 is an 80-hour Academic elective with Earth and Space Science 1, 2 and 3 as prerequisites. DRRR was a core subject.
In a country where typhoons, earthquakes and volcanic eruptions are routine rather than exceptional, that is a real shift in who gets the material. A learner in the Business and Entrepreneurship cluster, or in any Technical-Professional cluster, can now complete Senior High School without touching hazard maps or RA 10121. Under the old structure, a STEM or GAS learner could not.
DepEd has not published a rationale for that specific downgrade that we could find, and it may be that hazard content is threaded into the new General Science core subject. The core subject guides are published on the DepEd site, so a school can check the General Science guide directly rather than assume either way. For the wider restructure, see our Strengthened SHS curriculum explainer, and for how science content is sequenced from the lower grades, our DepEd science curriculum guide.
Timing, finally. DO 017 applies to Grade 11 from SY 2026-2027 and to Grade 12 from SY 2027-2028, and Grade 12 learners in non-pilot schools this year continue on the 2016 curriculum. If you are in Grade 12 right now in a non-pilot school, DRRR is still your subject and the ten content areas above are still your syllabus.
Looking for a senior high school? Browse schools and compare tracks, tuition and reviews across the Philippines on SchoolFinderPH.
Sources
- DepEd — K to 12 Senior High School Core Subject curriculum guide, Disaster Readiness and Risk Reduction (official PDF, via Internet Archive)
- DepEd — DO 21, s. 2019, Policy Guidelines on the K to 12 Basic Education Program (official PDF, Annex 2 Secondary Education)
- DepEd — DO 017, s. 2026, Strengthened Senior High School Curriculum
- DepEd — Strengthened SHS curriculum guide, Earth and Space Science 4 (official PDF)
- DepEd — Strengthened SHS curriculum guide, Earth and Space Science 1 (official PDF)
- LawPhil — Republic Act No. 10121, Philippine Disaster Risk Reduction and Management Act of 2010
- SchoolFinderPH — Specialised Subjects by Strand
