Felix Blumhardt, Ph.D. Christy Derrick, M.P.H. Karyl Askew, Ph.D. Melissa Page, Ph.D., M.P.H Rachael Spencer Olivia Stevenson, MS Kathy Dowell, Ph.D.

Felix Blumhardt, Ph.D.

Director of Evaluation

Felix Blumhardt provides leadership and support to a dynamic team of TEG evaluators who conduct highly participatory and utilization-focused evaluation projects in the areas of education and human services. Felix’s background lies in the education, social work, mental health, health, and military fields. Prior to working at TEG, Felix served as an evaluator at the Center for Training, Research, and Evaluation in the Pacific at the University of Hawaiʻi - Manoa conducting evaluations in a multicultural context, and as adjunct faculty at University of South Carolina, University of Kansas, and University of Hawaiʻi - Manoa where she taught graduate and undergraduate courses in Research and Evaluation, Human Behavior in the Social Environment, and Working with Individuals, Groups, and Families. Felix’s experience as an active duty Army officer and social worker include an overseas deployment and her work with soldiers and families continues to influence her on a daily basis. People are her passion, and she strives to truly “hear” her colleagues and partners. 

Christy Derrick, M.P.H.


Christy Derrick has worked in the field of evaluation since 2000. As an Evaluator, she heads up the evaluations of several federally-funded education grant programs, developing logic models and evaluation plans that work toward determining implementation fidelity and program impacts. Christy holds an undergraduate degree in psychology and a master’s in public health. Her skills and interests include development of data collection instruments, database development and maintenance, creating reports in various formats appropriate to diverse audiences, and online data collection. Christy notes that one of the most rewarding aspects of her job is working with educators, saying, "their passion about their work keeps me grounded in what is really important – students' lives."

Karyl Askew, Ph.D.


In her role as an Evaluator with TEG, Karyl Askew combines her academic training and professional experiences to design and execute educational evaluations that address diverse goals, needs, and populations. Karyl not only holds doctoral and master’s degrees in education (with specializations in educational psychology, measurement, and program evaluation), but also a bachelor’s of science in aerospace engineering. Her work researching and evaluating science education programs and college-access initiatives unites these two passions and allows her to explore her interests in after-school and out-of-school extracurricular activities, museum education, adult-youth mentoring, adolescent career development, and gender differences in science achievement and achievement motivation.

Melissa Page, Ph.D., M.P.H


Melissa Page uses relevant experience from her ten years of writing and evaluating grants funded by federal and state agencies when working with clients to determine the best evaluation plan and strategies to assess program impacts and outcomes. She engages key stakeholders as partners in the evaluation so that findings provide meaning to the context and are utilized by the client. Her past evaluation experiences include teacher professional development and new teacher induction support, engaging youth in STEM activities, and partnerships of teachers and graduate students in K-12 classrooms. Her evaluation skills include survey development, conducting focus groups or interviews, classroom observations, analyzing qualitative feedback, and reviewing and analyzing archived or administrative record reviews, student artifacts, or other project-specific measures.

Melissa graduated Summa Cum Laude from Grand Canyon University with a Bachelor of Science degree in Corporate Fitness and Wellness and Summa Cum Laude from the University of Arizona with a Master of Public Health degree. She then earned her doctorate from the University of Arizona in Family Studies and Human Development with an applied program planning and evaluation minor. Melissa enjoys spending her free time with family, reading, quilting, or scrapbooking.

Rachael Spencer


Rachael Spencer is a culturally responsive evaluation and research professional with more than seven years of success working on projects funded by the U.S. federal government and international agencies. She has consulted for various state, federal, and international agencies to improve services for individuals who experience violence, English as a Second Language speakers, and low-income individuals. As a former Fulbright Fellow and the spouse of a military officer, Rachael moved frequently throughout the U.S., South Korea, and Jordan conducting evaluations and improving services for diverse populations. Rachael received her Master of Public Administration from Columbia University, is a co-author of seven manuscripts published in scholarly peer-reviewed journals, and speaks the Arabic language. She is particularly proud of the work she has done to build partnerships between research institutions and community-based programs that have strengthened resources and effective programming for the most vulnerable populations.

Olivia Stevenson, MS

Data Architect

Olivia Stevenson assists The Evaluation Group with data collection, data management, and data analysis in her role as a Data Architect. In collaboration with teams, she works to assure data is collected, secured, and analyzed effectively for all users. Olivia has earned a M.S. in Applied Statistics and Research Methods, as well as a B.S. in Psychology. For fun, Olivia enjoys watching movies, reading, and visiting the beach.

Kathy Dowell, Ph.D.


Kathy Dowell brings over 20 years of experience in evaluation to her role as Evaluator at TEG.  She has conducted evaluations for state and local government agencies, universities, foundations, and community-based programs focusing on education, youth development, STEM, health, and teacher professional development.  She takes a highly participatory approach to evaluation, working in close partnership with key program stakeholders during all phases of evaluation.  Having worked in both the public and private sectors, she brings a broad range of experience and expertise to her work in helping organizations increase their evaluation capabilities.  She uses this experience to design, conduct, and manage formative and summative evaluations that vary widely in design and methodology and that are tailored to meet the needs of each unique client and program.  Kathy has a B.A. in Psychology (University of Maryland Baltimore County), a M.A. in Clinical Psychology (Loyola College in Maryland), and a Ph.D. in Policy Sciences (concentration in Program Evaluation, University of Maryland Baltimore County).