Designing Dual Language Programs That Endure
Dual Educational Resources (DER) partners with districts and school leaders to design and strengthen dual language immersion and bilingual programs grounded in research and decades of practice. Led by Elizabeth Willaum, a nationally recognized leader in bilingual-biliterate education.

Supporting Schools in Building Multilingual, Biliterate, and Globally Ready Learners
Dual Educational Resources is an educational consulting firm specializing in dual language immersion (DLI), bilingual-biliterate education, and multilingual program design and development. Led by Elizabeth Willaum, a nationally recognized leader in dual language and bilingual-biliterate education, we partner with districts and schools to develop high-quality programs grounded in research, equity, and classroom practice.
With more than fifty years of experience in education, we help strengthen program design, instructional quality, and leadership capacity so bilingual-biliterate and dual language programs can deliver lasting results for students.


Who We Partner With
Dual Educational Resources partners with a wide range of educational partners, including:
Public school districts
Charter schools and charter networks
Private and independent language immersion schools
Boards of education and central office leadership
School administrators, instructional leaders, and educators
Parent and community advocacy groups
Our Areas of Focus
Dual Educational Resources provides comprehensive support across the full lifecycle of dual language immersion and bilingual-biliterate education programs, including:
Dual Language Immersion Program Design and Implementation
Strategic support for two-way and one-way dual language immersion models, including program structure, language allocation, scheduling, and long-term sustainability from early childhood through secondary levels.


Professional Learning and Leadership Support
Research-based professional learning for educators, school leaders, and boards of education focused on effective bilingual instruction, program leadership, and best practices in dual language immersion settings.
Curriculum, Instruction, and Biliteracy Development
Guidance on planning and delivering rigorous instruction in two languages, biliteracy development, content integration, and alignment with instructional frameworks, standards, and assessments.


Coaching, Mentoring, and Program Evaluation
Ongoing instructional coaching, classroom modeling, walkthroughs, mentoring, and program evaluation to support continuous improvement, data-informed decision making, and program effectiveness.
Experienced Leadership. Thoughtful Implementation.
Led by Liz Willaum, a nationally recognized educational consultant and pioneer in dual language immersion, Dual Educational Resources provides clear guidance and practical support to help bilingual-biliterate and dual language programs grow with rigor and long-term sustainability.

A Trusted Partner to Schools and Educational Organizations
Dual Educational Resources has partnered with schools and districts across New Jersey, New York, and nationally, strengthening dual language and bilingual programs through clear program design, effective instruction, and sustained support.
Let’s Strengthen Your Dual Language Program
Research-based guidance and practical support for dual language immersion and bilingual-biliterate education programs.
