For information and guidance of all concerned, enclosed is a copy of the Implementing Rules and Regulations (IRR) of the Republic Act (RA) No. 11480, titled “AN ACT AMENDING SECTION 3 OF REPUBLIC ACT NO. 7797, OTHERWISE KNOWN AS AN ACT TO LENGTHEN THE SCHOOL CALENDAR FROM TWO HUNDRED (200) DAYS TO NOT MORE THAN TWO HUNDRED TWENTY (220) CLASS DAYS”. . .