Brenda Castellanos
Alexandria,VA
Summary
Student-centered elementary educator with 8+ years of experience spanning preschool through upper elementary. Proven ability to increase student engagement and academic growth through differentiated instruction, data-driven practices, and strong classroom management. Experienced in supporting diverse learners, including students with IEPs and behavioral needs. Committed to building inclusive classrooms and strong partnerships with families.
Overview
10
10
years of professional experience
1
1
Certification
Work History
2nd Grade Teacher
Arlington Public Schools
Arlington, VA
08.2025 - Current
- Increased student reading proficiency through targeted small-group instruction and data-driven interventions
- Designed differentiated lessons that supported a wide range of learners, including ELL and IEP students
- Improved classroom behavior and independence by implementing consistent routines and positive behavior strategies
- Used formative and summative assessment data to adjust instruction and close learning gaps
- Strengthened family engagement through regular communication and progress updates
Kindergarten Teacher
Arlington Public Schools
Arlington, VA
08.2021 - 06.2025
- Accelerated early literacy and numeracy development using hands-on, developmentally appropriate instruction
- Increased student engagement through integration of technology and interactive learning centers
- Successfully supported diverse learners by implementing IEP accommodations and differentiated strategies
- Built strong classroom community resulting in improved student behavior and social-emotional growth
- Led effective parent conferences, improving family involvement and student support at home
Administrative Coordinator
Center for Autism and Related Disorders
Fairfax, VA
01.2021 - 10.2021
- Streamlined scheduling processes, improving efficiency and communication across staff
- Coordinated hiring logistics and maintained organized records for smooth office operations
Instructional Assistant
Long Branch Elementary
Arlington, VA
09.2019 - 06.2021
- Boosted student performance in reading and math through targeted small-group instruction
- Provided individualized support for students with special needs, contributing to measurable academic progress
- Supported classroom efficiency through lesson preparation, grading, and behavior management
Registered Behavior Technician (RBT)
Attain ABA
Chantilly, VA
06.2020 - 01.2021
- Implemented behavior intervention plans that improved student behavioral outcomes
- Collected and analyzed data to track progress and inform treatment adjustments
Preschool Teacher
The Goddard School
Chantilly, VA
02.2016 - 09.2019
- Developed foundational literacy and social skills through structured early childhood curriculum
- Created a nurturing and inclusive classroom environment that supported developmental growth
Education
Master’s - Elementary Education
Old Dominion University
Bachelor’s - Integrated Studies
George Mason University
Associate Degree - Teacher Education
Northern Virginia Community College
Skills
- Classroom Management
- Differentiated Instruction
- IEP Implementation
- Behavior Management
- Data-Driven Instruction
- Family Communication
- Educational Technology
- Curriculum implementation
- Team collaboration
- Problem-solving skills
- Lesson plan development
Certification
- Registered Behavior Technician (RBT)
- CPR & First Aid Certified
Languages
Bilingual: English & Spanish
Timeline
2nd Grade Teacher
Arlington Public Schools
08.2025 - Current
Kindergarten Teacher
Arlington Public Schools
08.2021 - 06.2025
Administrative Coordinator
Center for Autism and Related Disorders
01.2021 - 10.2021
Registered Behavior Technician (RBT)
Attain ABA
06.2020 - 01.2021
Instructional Assistant
Long Branch Elementary
09.2019 - 06.2021
Preschool Teacher
The Goddard School
02.2016 - 09.2019
Bachelor’s - Integrated Studies
George Mason University
Associate Degree - Teacher Education
Northern Virginia Community College
Master’s - Elementary Education
Old Dominion University