Complex sentence: On May 30,2013, Foothill High School had their fiftieth commencement ceremony; the 2013 graduating class received a commemorative trophy and one-of-a-kind diploma covers with the school's golden anniversary Trojan emblem.
Split into simpler sentences: On May 30th, 2013, Foothill High School had their fiftieth commencement ceremony with the graduating class of 2013. With that, the graduates received a commemorative trophy and one-of-a-kind diploma covers with the schools golden anniversary Trojan emblem.