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Cross Keys High School

Dekalb County Schools


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Dr. Brittany Cunningham
Phone: 678-874-6103   Fax: 678-874-6110 

A volunteering experience at Scott Lane Elementary in Santa Clara, California inspired Dr. Cunningham to leave her Risk Analyst position at Hitachi Data Systems for a teaching career. She began her educational career in 1999 as a mathematics and science teacher in Oakland, California.

In 2001, Dr. Cunningham relocated to Atlanta, Georgia, working as a mathematics teacher in Fulton County Schools for three years before transitioning to Sequoyah Middle School in DeKalb County. Over a nine-year span, she served the Sequoyah community as a teacher, assistant principal, and principal. In her tenure as Principal, Sequoyah demonstrated significant increases in enrollment, civic and parental engagement, and academic performance. In August 2013, Sequoyah Middle School was recognized by the state of Georgia as a High Progress Reward School.

Dr. Cunningham transitioned to Druid Hills High School in the summer of 2013. Under her leadership, Druid Hills High achieved and sustained a two-digit increase in the CCRPI, Georgia’s report card, and made significant progress in increasing access to rigorous coursework for all students. In 2016, Dr. Cunningham was named DeKalb County School District Principal of the Year.

In 2017, Dr. Cunningham left DeKalb County School District to serve as the Director of Testing + Assessment for Atlanta Public Schools. Dr. Cunningham served as the system test coordinator for all national and state-mandated assessments and provided leadership and support to schools and central office personnel regarding district assessment processes, policies, and utilization. Under her leadership, Atlanta Public Schools transitioned to 100% online Georgia Milestones administrations for all district schools.

During the summer of 2019, Dr. Cunningham transitioned to serve as a High School Principal Coach. She coordinated and facilitated interventions and professional learning experiences to guide growth and development of new and turnaround school principals. Dr. Cunningham partnered with school leadership teams in developing school improvement plans, identifying opportunities to build leadership capacity, and providing support, feedback, and modeling of effective leadership practices.

Dr. Cunningham earned her Bachelor's degree in Business Administration from Emory University. Both her Master's degree in Management and doctorate in Educational Policy Studies were earned at Georgia State University. Dr. Cunningham also serves as a adjunct professor and presenter at state and national conferences on research methods, ethics, data-informed leadership, organizational behavior, and building leadership capacity.

Dr. Cunningham is so excited to be at Cross Keys and working with a community she deeply respects and has been committed to supporting since her days at Sequoyah. In her spare time, Dr. Cunningham enjoys spending time with her husband and dogs, reading, traveling, watching sports, and eating out.

Ms. Tiffany Mahaffey 
Assistant Principal, Testing
Phone: 678-874-6108

Ms. Tiffany Mahaffey is pleased to be a member of the Cross Keys High School community. Ms. Mahaffey is a proud product of the DeKalb County School District and has spent her entire 20-year career in education working for the district. Ms. Mahaffey worked as a social studies teacher for 14 years at both Columbia High School and DeKalb Early College Academy, and she has spent the last 6 years as an Assistant Principal at Cross Keys. Ms. Mahaffey is the Assistant Principal of Testing and serves students with the last name DIB-LOP. She is also proud to be the administrative liaison for the Exceptional Education and Social Studies Department.  


Admin attendance
Mrs. Reena Moorman
Assistant Principal: Attendance

Phone: 678-874-6115
[email protected]


Ms. Moorman is proud to have served the Cross Keys Community since 2016 in her roles as Academic Coach and now Assistant Principal.  Ms. Moorman is the administrative liaison for the Senior class (12th grade). She is also the administrator that partners with and oversees the success of both the Intensive English department and the Multilingual Learners department. Her approach towards education is one that is assets-based. She believes all students and staff members bring something special to the table, and these distinct qualities make the school better as a whole. By highlighting unique skill sets and differences, Ms. Moorman works towards building capacity within individuals while creating an unstoppable educational community! 


Mrs. Roberta Gibson

Assistant Principal, Discipline
Phone: 678-874-6112

Mrs. Roberta Gibson is truly honored to be a member of the Cross Keys High School learning community and looks forward to a great school year. Mrs. Gibson is a former Secondary Special education teacher and has served the Cross Keys community and all of its stakeholders for 8 years. Mrs. Gibson serves as the Assistant Principal for students with the last name Lorenzo - Ramirez Zacauha.  She will work closely with their assigned counselor to ensure that they get the guidance they need to be successful. Mrs. Gibson also serves as the administrative liaison for the Mathematics department, P.E Department, and Athletics.


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Mr. Nicholas Boone 
Assistant Principal, 9th Grade (A-Lopez)
Phone: 678-874-6113

Mr. Boone is looking forward to a new school year at Cross Keys High School. He firmly upholds the belief that every student possesses the capacity to learn and excel academically, given the opportunity and support. Mr. Boone currently caters to 9th-grade students with a focus on students with last name A- Lopez. Additionally, he serves as the administrative liaison for the Fine arts and Mathematics departments.