The document discusses the implementation of senior high school under the K-12 basic education system in the Philippines according to the Enhanced Basic Education Act of 2013. It outlines the new senior high school curriculum which includes four academic tracks, lists the core and specialized subjects for each track, and describes the new grading system which evaluates students based on written work, performance tasks, and final exams. The grading system uses ratings of Did Not Meet Expectations to Outstanding and a transmutation table to convert raw scores to final grades.