§ 16-20-3 Days of special observance Duty of teachers and officials. The twelfth day of February (as Grand Army Flag Day, in honor of the birthdayof Abraham Lincoln), the last Friday in April (as Arbor Day), the fourth day ofMay (as Rhode Island Independence Day), the thirteenth day of September (asCommodore John Barry Day), and each of these days in every year, or when any ofthese days shall fall on Saturday then the day preceding, or on Sunday then theday following, shall be especially observed with appropriate exercises in allthe schools of this state; and it shall be the duty of teachers and schoolofficers to make suitable provisions for the proper observance of these days.