ROCHESTER — Rochester Catholic Schools has announced that Tina Rosenthal Monosmith will become the school system's new president. Monosmith will begin her new role Aug. 12. She fills the role left vacant by the resignation of Annemarie Vega. "Tina Monosmith joins RCS with many years as a Catholic School educator and administrator," said Pamela Zeimetz Bowman, co-chair of the RCS Board of Trustees. "Her mission-focused journey to support the…