Complex sentence: Block grew up in Brea, California and attended St. Angela Merici School in Brea and an all-girls Catholic private school, Rosary High School, in Fullerton, California for her secondary education.
Split into simpler sentences: Block grew up in Brea, California, where she attended St. Angela Merici School. Later she attended an all-girls Catholic private school, Rosary High School, Fullerton, California for her secondary education.