Complex sentence: He earned his undergraduate degree from Mercyhurst College in Erie, PA where he was the first to complete an advanced medical program, amazingly four years of undergraduate schooling into three using his fourth year of undergraduate studies as his first year of medical school.
Split into simpler sentences: He earned his undergraduate degree from Mercyhurst College in Erie, Pennsylvania, where he was the first to complete an advanced medical program. He finished his undergraduate schooling into three and used his fourth year of undergraduate studies as his first year of medical school.