DIV MEMO NO 153 s2021 REITERATION OF THE SCHEDULE FOR THE CONDUCT OF THE CY 2021 QUARTERLY ON THE NATIONWIDE SIMULTANEOUS EARTHQUAKE DRILL (NSED) By DepEd Dagupan IT Unit posted on June 8, 2021 DIV MEMO NO 153 s2021 REITERATION OF THE SCHEDULE FOR THE CONDUCT OF THE CY 2021 QUARTERLY ON THE NATIONWIDE SIMULTANEOUS EARTHQUAKE DRILL (NSED)