The Science Department at Our Lady of Mercy Catholic High School offers students a college preparatory experience in the physical and biological sciences. We offer rigorous laboratory courses in Biology, Honors Biology, Anatomy, Chemistry, Honors Chemistry, Physics, Conceptual Physics, and Environmental Science. AP courses in Chemistry and Physics are offered to students who have excelled in foundation classes and who have teacher recommendations.

Meet the Faculty 

Robert Grgetic (B.S., University of West Georgia) is a new addition to the Mercy staff, teaching Biology, Honors Biology, and A.P. Biology. Prior to teaching at Mercy, he spent four years teaching Physics at McIntosh High School in Peachtree City, GA. He is a parishioner and a member of the church choir at St. Mary Magdalene in Newnan, GA. He is really looking forward to this year! 

Ryan Schilling (B.S., Georgia Tech) joined the Mercy faculty in 2013 and teaches Physics, AP Physics, Environmental Science, and Honors Algebra II. Coaching Track and Cross Country and co-leading the Science Olympiad with Sergio Burguet. After graduating from OLM in 2005 Ryan went on to Georgia Tech where he studied Atmospheric Sciences. While there he interned at the National Weather Service and went to Greenland for atmospheric Chemistry Field Research. He is a huge Atlanta Falcons Fan, and a parishioner at St. Gabriel’s in Fayetteville. In his spare time he enjoys camping, outdoor activities and concerts.

Katie Schneider (B.S. Mechanical Engineering: Product Design, Stanford University) joined the faculty in 2018 and teaches Geometry and Anatomy/Physiology. She will also be coaching the girl's soccer team this spring. She was very involved in outdoor education at Stanford and loves hiking, backpacking, and anything outside, especially playing sports. She also loves dancing, running, painting, and reading.