I am Marivic R. Barnachea, Head Teacher III of Teodoro Hernaez National High School. I am the Math Coordinator of our school. I am also one of the Division Facilitator/Speaker in Math, Division Content Evaluator of LRMS (Math) and Reviewer of Assessment tools in Math in our Division. I was also a coach during the MetroBank Math Challenge where we were able to go up to the National. My students participants in Math2Shine, PNVO and IVMO also won medals during the competition.

- Division of Ilocos Sur, Teodoro Hernaez
- Math2Shine, PNVO, IVMO
- MTAP, MMC, Math Olympiad
- VMTTC