Complex sentence: He attended Palo Verde Junior College where he was a junior college All-American at linebacker, then transferred to Cal Poly in San Luis Obispo, California, where he was an All-American at linebacker, and played fullback as well.
Split into simpler sentences: He attended Palo Verde Junior College where he was a JC All-American at linebacker. He transferred to Cal Poly San Luis Obispo where he was an All-American at linebacker, and played fullback as well.