SUPPLEMENT DATED AUGUST 12, 2019 TO POS DATED JULY 31, 2019 | US $5,700,000* REFUNDING CERTIFICATES OF PARTICIPATION Series 2019 Evidencing Proportionate Undivided Interests of the Owners Thereof in Base Rental Payments to Be Made to the PERRIS SCHOOL DISTRICT SCHOOL FACILITIES CORPORATION by PERRIS ELEMENTARY SCHOOL DISTRICT POS POSTED 7-31-19