Complex sentence: She went on to study at the Peabody Conservatory under the direction of Mieczyslaw Munz.She attend the Holton-Arms School which was in Washington, DC at the time.
Split into simpler sentences: She went on to study at the Peabody Conservatory under the direction of Mieczyslaw Munz. She attended the Holton-Arms School which was in Washington, DC at the time.