Complex sentence: Simultaneously, Tilghman introduced curriculum advancements that integrated greater lessons in culture and business, reorganized student government, and established the school's first alumni magazine (The Morristown School News).
Split into simpler sentences: Simultaneously, Tilghman introduced curriculum advancements that integrated greater lessons in culture and business. He also reorganized the student government, and established the school's first alumni magazine (The Morristown School News).