Founder & Chief Executive Officer
Founder & Chief Operating Officer
Hello everyone! I have been an educator for 22 years. I practiced as a paraprofessional, public school teacher, and university professor. I believe in alternatives for training educators and behavior technicians in order to offer a variety of pathways for diverse learners. Mark and I were both raised in rural North Dakota, as well as have children attending rural school. We understand the unique needs of training and retaining educators, in addition to meeting the community’s behavioral health needs.
Hello! I have had many life experiences from owning a business to parenting, which have led me to this chapter with Certification Central. As a continuous learner, I am committed to creating training opportunities for those who learn differently and for those who have busy lives and are longing for a lane change in life. I have a desire to open opportunities for those living in rural and remote areas. Katherine and I want to help reduce the teacher shortage in these areas while making a career in teaching affordable by reducing the financial burden of school loans.
RBT Trainer and Evaluator
Hi! I have been working in the field of behavior analysis for 20 years. I practiced as a para-professional, behavior support staff, behavior therapist, and behavior analyst. Although I began my experience working with adults with disabilities, most of my experience has been with students in rural North
Dakota schools. I love to learn and seek out opportunities to share my passion about behavior analysis with others. Currently, I am the graduate director of the Applied Behavior Analysis program at the University of North Dakota, as well as President of the North Dakota Association for Behavior Analysis (NDABA).
Dr. Beth Walters
Hello! My name is Beth Walters. I was born and raised on a farm in rural North Dakota but have resided in Grand Forks for the past eighteen years. I am a wife and mother of three children aged five, ten and thirteen. I earned a bachelor’s degree in Family & Consumer Sciences from Concordia College in 2001, a master’s degree in Special Education from the University of North Dakota in 2004 and a doctorate in Teacher Education from UND in 2012. I have been both a FACS teacher and a special education strategist at the middle school and high school levels, working for Grand Forks Public Schools for the past 18 years. I have also taught as an adjunct instructor for UND and an online instructor for the North Dakota Center for Distance Education. In my free time I work as a realtor and have a strong interest in genealogical research.
Dr. Carly Retterath
Hello! My name is Carly Retterath. I was raised in Pierre, South Dakota but have resided in the Bismarck/Mandan area for the past nine years. I am a wife and mother of one daughter who was born in November 2019. I earned a bachelor’s degree in Elementary and Special Education from the University of Mary in 2009, a master’s degree in Special Education from the University of Mary in 2011 and a doctorate in School District Administration from the University of South Dakota in 2019. I have been a high school and elementary special education strategist and worked as a special education coordinator for several districts in central North Dakota. I am currently the Alternative Education Director for Mandan Public Schools. In my free time I enjoy working out, reading and spending time with my family.
Dr. Tammy Mayer
I have been in the teaching field for 9 years. I currently teach at a Federal level setting four in the Twin Cities area serving students with emotional/behavioral disorders. I have also taught in a day treatment educational setting. I earned my BA from Concordia College in Elementary Education with middle school specialization in math. While working at a center-based autism program doing Applied Behavioral Analysis, I earned my MA in Special Education, EBD from the University of North Dakota. I am currently working towards an EdS degree. Outside of work, I am the mother of a very active toddler and an avid runner.
Hello! I am originally from Harvey, North Dakota and currently work at Full Circle Pediatric Solutions Fargo, ND as the Owner/Behavior Analyst. I have several years of experience working in the public school system, serving students ages 3-21, and supporting schools is still my passion! I am a Board Certified and North Dakota Licensed Behavior Analyst and Nationally Certified School Psychologist. Also, I am an adjunct professor at the University of North Dakota teaching Applied Behavior Analysis coursework. Outside of work, I enjoy spending time with family and friends (especially being an aunt), traveling, sports, reading, and will never turn down a good adventure!
Dr. Joe Leggio
There is an adage that goes “I wish that I knew what I know now when I was younger.” Many teachers, including myself, have expressed how they wish they could get their students back from their first years of teaching so they could apply what they have learned through education and experience. After 25 years of teaching students from kindergarten through college and after years of formal (i.e., B.A. in English, M.Ed. in secondary English Education, M.Ed. in special education, and Ph.D in higher education) and informal education, I want to share what I have learned—and what I am still learning—about what works and does not work when working with students with disabilities. I have worked with students with traumatic brain injury, autism, specific learning disabilities, and hearing impairments and deafness. Currently, I am teaching students with emotional and behavior disorders at the elementary level, and that has been my role for most of my teaching career.
Dr. Angela Wanzek
Greetings! My name is Dr. Angela Wanzek & I am privileged to be a part of the Certification Central team. I was born and raised in the northwest part of North Dakota, having lived in ND all my life, and currently teach as a Special Education Strategist in Jamestown, ND, as well as an Adjunct Professor for Mayville State University. I am currently in my 20th year of teaching, which has included varying positions such as: Elementary teacher, Gifted & Talented Education teacher, Alternative Program teacher and Special Education Strategist. I obtained a bachelor’s degree in Elementary Education with a minor in Special Education from the University of North Dakota in 1999, a master’s degree in Special Education from Minot State University in 2011 & a Doctorate of Philosophy degree in Educational Leadership from UND in 2018. I hold many varying credentials that include: both Elementary and High School Principal credentials, as well as the Special Education Director credential. Many endorsements include: Early Childhood Special Education, ASD, Gifted & Talented Instruction, Title I Reading & Math, and Alternatively Assessed Instruction. As a mom of 3, (19, 15 & 10) I spend much of my free time at various school activities, enjoying theater & music events, and any type of reading; nonfiction & fiction – most particularly anything education related. I have a particular interest in Educational Research in the area of Special Education & look to further pursue the title as a Certified Behavior Analyst.
Dr. Aimee Rogers
Salutations! I’m very excited to be a small part of the Certification Central team and to be a part of your journey into the wonderful world of special education. Although I am not currently working directly in special education, once a special educator always a special educator. I have been an educator for over 20 years and have taught in international settings, at residential and
day treatment facilities, a charter high school, a public high school, at the University of Arizona South, the University of Minnesota and most recently at the University of North Dakota. I am currently the library media specialist at South Middle School in Grand Forks, North Dakota and I am really enjoying my new role; I love getting to talk about books on a daily basis with middle
school students. I have a B.S. in Special Education from the University of Evansville, a M.A. in Language, Reading and Culture with a focus on adolescent literacy from the University of Arizona, and a Ph.D. in Curriculum and Instruction with a focus on literacy and children’s and young adult literature from the University of Minnesota. In addition, I will soon embark on a master’s program in library science with a focus on school librarianship. When I am not working or taking classes, I am probably reading multiple books at the same time, attending a book club meeting or other literary event, working on one of my many unfinished crafting projects or devising the next library activity that will make my middle schoolers roll their eyes.