Complex sentence: He was among the few Flemish-speaking boys admitted to the prestigious and highly competitive Royal Athenaeum of Antwerp, where he followed his father's career path in choosing to study science and engineering, receiving top marks in mathematics.
Split into simpler sentences: He was among the few Flemish-speaking boys admitted to the prestigious and highly competitive Royal Athenaeum of Antwerp. There, he followed his father's career path in choosing to study science and engineering, consistently receiving top marks in mathematics.