Douglas O’Roark, Executive Director

In addition to serving as the Executive Director of MC2, Doug is the Associate Director of DePaul’s STEM Center which seeks to improve math teaching across CPS. Previously he led the Secondary Math component of the UChicago Urban Teacher Education Program and was the first teacher hired at Payton College Prep. He was awarded the Radio Shack National Teacher Award, the MAA’s Sliffe Award for Distinguished Math Teaching, and the ICTM  Rine Secondary Math Teaching Award. Both the City of Chicago Math League and Payton Prep have awards named in his honor. He lives in Chicago’s Andersonville neighborhood with his wife, a mental health researcher at UIC, and two children, who attend CPS.


Barbara Manjarraz, Back of the Yards Site Coordinator

Barbara has been a math teacher at Back of the Yards College Prep since the school opened in 2013, teaching a variety of International Baccalaureate courses.  Barbara graduated from St. Olaf College in Minnesota with a bachelors in mathematics. Outside of math, she loves coaching badminton, spending time with her two children at soccer and baseball games, traveling, and spending any spare moment in Minnesota with her family!


Robin Lam, Bridgeport Site Coordinator

Robin teaches math at George Washington High School. She graduated from Vassar College with a Bachelor’s in Mathematics and from the University of Chicago with a MAT for Secondary Math Education. The easiest ways to get Robin talking in a conversation are to mention hiking, reading novels, or noodles. She lives in Bridgeport and enjoys exploring new restaurants in the area.


Jen Zimmerman, UChicago YSP Site Coordinator

In the fall of 2015 Jen joined MC^2 as the University of Chicago YSP Math Circle site coordinator. Additionally she has served as the Associate Director of the University’s SESAME Program for the past 13 years. SESAME is an outreach program offering Chicagoland teachers courses towards the State of Illinois Middle School Endorsement in Mathematics and Science. In her spare time she also runs a marketing campaign for the University’s Polk Brother Program, another teacher outreach opportunity.

Salvador Venegas, Little Village Coordinator

Salvador Venegas is a national board certified teacher at Infinity Math, Science and Technology High School located within the Little Village High School Campus where he is math department chair. He is enrolled in the Math and Science Curriculum and Instruction doctoral program at UIC where his research interests include critical mathematics and dual language education.

Lauren Phillips, Morgan Park Site Coordinator

Lauren has been a math teacher at Morgan Park High School since 2010, teaching a variety of courses and loving every journey she takes with students in the world of mathematics. Lauren graduated from the University of Illinois Urbana Champaign in 2010 with a B.S. in Psychology, and then in 2012 graduated from Northwestern University with a MS.Ed in Secondary Mathematics. Outside of math, she loves boating, movies, traveling, and cooking!


Kathie Ang, Payton Site Co-Coordinator

Kathie is a science teacher at Walter Payton College Prep. After graduating from the University of Chicago with a degree in Biology, she joined UChicago’s Urban Teacher Education Program where she earned her MAT in secondary science education. As a science teacher, she loves loves to be outside, so you can find her running, biking, swimming, and doing yoga around Chicago and working farmer’s markets for Phoenix Bean Tofu. She is also an avid sports fan and since she’s originally from New Jersey, loves talking to people about the New York Jets and the New York Mets.

Katherine DeLisle, Lane Tech Site Coordinator

Katie DeLisle is a mathematics teacher at Lane Tech College Prep High School. She recently graduated from Carthage College in Kenosha, Wisconsin with a degree in Mathematics and Secondary Education. She was also a 4-year member of the Cross Country and Track & Field team at Carthage. She enjoys reading, running, and eating lots of pizza in her free time!

Benjamin Walker, Payton Site Co-Coordinator

Benjamin loves learning and teaching, and believes that working with young people is as much a privilege as it is an adventure, and that learning math is something best done as part of a team. Benjamin developed his love of mathematics at Miami University of Ohio (BA Math and Stats, BA Integrated Math Education), Eagle Rock School in Estes Park, Colorado, Golder College Prep, and currently Walter Payton College Prep. Particular interests include math modeling, climbing, crossfit, vocal music, and traveling.

Kevin Lee, Payton Site Co-Coordinator

Kevin is a National Board Certified math and computer science teacher at Walter Payton College Preparatory High School and just started his 15th year as a teacher. He grew up in the Chicago suburbs, earned a B.A. in mathematics from Quincy University and an M.S. in Pure Mathematics from the University of New Orleans.

Bill Schmit, Pilsen Site Coordinator

Bill teaches math at Lindblom Math & Science Academy. He is a lifelong Southsider, and graduated from the University of Chicago with a double major in Mathematics and Chemistry, as well as a Masters in Teaching. In his spare time, Bill likes to cook, bike around the city, and play a variety of instruments, to the delight of his wife and chagrin of his neighbors.