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Meet Your Administrators

Administrative Duties & Responsibilities
A complete list of the duties & responsibilities for each administrator and additional support staff

Communication Protocol
Your concerns are important to us. Please use this to understand the appropriate chain of communication to take when you need to determine who to speak to when there is a concern.

Student Support Teams
Find a student's assigned administrator & counselor or additional support staff roles

CMS Principal

Stephanie Haga
haga@fultonschools.org
470-254-4520

I am honored to serve as the principal of Crabapple Middle School and have been inspired by the dedication of our students, staff, families, and community since joining the school in February 2025. With more than 11 years of experience as a middle school teacher, four years as a STEM Program Specialist, and a passion for supporting young adolescents, I am committed to ensuring every student feels valued, supported, and challenged to reach their full potential. At Crabapple, we believe strong relationships, high-quality learning, and meaningful partnerships with families create the foundation for student success. I am excited to build on our tradition of excellence and work together to help every student thrive.

Assistant Principals

Melanie McCollum, 
6th Grade Assistant Principal
McCollumM@fultonschools.org
470-254-8334

I am excited to begin my second year as the 6th Grade Assistant Principal at Crabapple Middle School. As a proud Roswell resident and parent of two children in Fulton County Schools, I am grateful to serve a community that means so much to my family. Now in my 16th year with Fulton County Schools, I am passionate about helping students successfully transition from elementary to middle school. Sixth grade is an important year of growth, and I enjoy supporting students as they develop the independence, confidence, and habits necessary for middle school success. I believe that strong relationships and a positive school culture are key to helping all students thrive. I look forward to partnering with our students, staff, and families to make this a successful and rewarding year for every child.

Eric Casey
7th Grade Assistant Principal
CaseyE@fultonschools.org
470-254-8340

I am pleased to be afforded the opportunity to serve as the 7th grade Assistant Principal for the 2026-2027 school year! As I enter my 24th year in education and 20th at CMS, I am honored to support our students, families, and staff. I believe strongly that children thrive when adults lead with compassion, consistency, and integrity. In 7th grade, we strive to strike the correct balance between supporting and holding students to high/developmentally appropriate expectations which is critical during this important stage of their growth.

Andrew Bolin
8th Grade Assistant Principal
bolina@fultonschools.org
470-254-8333

Currently serving as the 8th Grade Assistant Principal at Crabapple Middle School, I am excited to move into another year at CMS. I spent the first 9.5 years at the high school level, where I built strong relationships with students, staff, and families while supporting academic achievement, school culture, and student success. I am passionate about creating a positive learning environment where all students feel supported, challenged, and connected. I am excited to partner with the Crabapple community to help every student grow academically, emotionally, and socially.