Complex sentence: He studied in the Colegio de San Luis, and when he was 11, he entered the Colegio Carolino and a year later, in 1825, received a scholarship to continue his studies.
Split into simpler sentences: He studied in the Colegio de San Luis, and when he was 11, he entered the Colegio Carolino. A year later, in 1825, he received a scholarship to continue his studies.