Joseph Mock


A product of Catholic schools, Mr. Mock brings nearly two decades of experience working with children, families, and teachers in public, private, and charter schools. He has earned a Bachelors degree in Education, a certification in Special Education from Bloomsburg University, and a Masters degree in Educational Leadership. He earned Principal Certification from The University of Scranton. Mr. Mock prides himself on being a student-focused and relationship-building leader who cares deeply about the purpose and promise for all students.  He is ready to drive the IMS mission and serve the students, families, and teachers at OMSSI to help them meet their God-given potential. 

Josh Rundle

Assistant Principal

Josh began his teaching career in Greenville, MS as a Lasallian
Volunteer. He later spent six years with the San Miguel Schools of Chicago as a teacher and then principal. During this time he also participated in development of the Catalyst Schools. Starting in 2006, Josh served in various capacities at Our Lady of Mercy School in Rio de Janeiro, Brazil, including middle school supervisor and interim superintendent.  Returning to the U.S. in 2015, he taught middle school math in the School District of Philadelphia before coming to OMSSI in August 2016. Josh earned a Bachelor’s degree in Mathematics from Drew University and Master’s degrees in Education and Administration from Lewis University and Dominican University. In addition to his classroom and administrative activities, Josh has enjoyed working with students as a coach and campus minister. He is an avid liturgical guitarist and cantor. Josh resides in Audubon, PA with his wife, Adriana, and their three children, Tiago, Lucas, and Melissa.