Complex sentence: He grew up in Lynnwood, WA and attended Mariner High School Everett, WA and transferred to Mira Mesa Senior High School in his senior year along with friend Amon Gordon of the Denver Broncos.
Split into simpler sentences: He grew up in Lynnwood, WA and attended Mariner High School Everett, WA. He transferred to Mira Mesa Senior High School in his senior year along with friend Amon Gordon, now of the Denver Broncos.