The rationale is clear: the old four-quarter system often felt like a race against the clock. The new structure provides longer Instructional Blocks (typically 61-62 days per term), allowing for deeper mastery of complex SHS competencies. Instead of rushing through specialized subjects every few weeks, students now have the breathing room to engage in more deliberate pacing and enriched learning.
The first year shift from quarterly periods to three-term school year coincides with the first year of full implementation of the Strengthened Senior High School Curriculum. This is crucial since all pilot implementation of the new Senior High School curriculum use the 4-quarter, 2-semester model.
For Grade 11, for instance, instead of 2-semesters per school year with each semesters having 2 quarters, there will now be 3 rating periods. Since each of the 5 Core Subjects in the Strengthened SHS Curriculum is to be taken by learners for the whole school year, this would not be problem.
For the elective subjects, DepEd designed a Budget of Work where competencies have been adjusted to suit into the 3-term model. Below are some useful materials for school administrators and teachers that would help them implement the Strengthened Senior High School Curriculum in 3-semester per school year.

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