Authors & Presenters

Susan B. Katz is a National Board Certified Teacher and award-winning, best-selling bilingual children’s author, known for her expertise in curriculum development for English learners. She’s also an internationally respected keynote speaker, professional development facilitator, and literacy coach.

Darlyne de Haan, EdD, is an instructional specialist for the New Jersey Department of Education, where she provided professional development to over 30 school districts labeled as either in need of improvement or a failing school.

Dr. Karen Johannesen Brock has been an educator and educational presenter for more than three decades. She has assisted more than 100 schools (K–12) and districts with implementing school improvement plans. Her work with schools and districts focuses on instructional coaching and design as well as professional learning plans, school-improvement plans, English learners and multilingual students, and literacy.

Cathy Padilla has served as an elementary education teacher, assistant principal, and principal at the intermediate and elementary levels. She specializes in developing and supporting leaders in professional learning communities, family engagement, categorical programs, migrant education, and English language development.

Maren Powers is an award-winning teacher, instructional coach and author. Because of her experience as a practitioner, she has learned how to do the work successfully. Maren is passionate about helping other educators implement, coach, and lead through the PLC process.

Lisa Tartaglia is a high school assistant principal in Loudoun County Public Schools in Virginia. She has been an educator since 1994 and has experience as an elementary classroom teacher, reading specialist, and high school literacy coach.

Alexandra Guilamo is an expert in the implementation, education, and effective leadership of dual-language, bilingual, and language-learner education. She has previously served as a teacher, academic coach, elementary school principal, and district-level educator.

Diane Kerr, a consultant, was assistant principal at Mason Crest Elementary School, Fairfax County Public Schools, Virginia. She has supervised and led multiple teams, providing services to schools, parents, and students.

Shawn Slakk, Chief Learning Officer for ABCDS&S Consulting, works with teachers, administrators, schools, and state agencies to offer strategies and support for multilingual learners and their classmates, in grades K–12 and adults.

Kathy Perez, EdD, is a professor emerita at Saint Mary’s College of California. She has extensive teaching experience as a general and special educator, literacy/ESL coach, administrator, and curriculum/staff-development coordinator.

Maria N. Trejo, EdD, is a consultant who provides training, coaching, and instructional leadership support. She also designs professional development events, webinars, and international teacher exchanges.

Dr. Margarita Espino Calderón, professor emerita at Johns Hopkins University, has worked on numerous research projects from 1990 to 2010 for JHU’s Center for Research on Education of Students Placed at Risk, Center for Data-Driven Reform, and Success for All Foundation.

Luis F. Cruz, PhD, is a sought-after presenter, coach, thought leader, and accomplished author with over 30 years of experience in education.

Katherine McCluskey is the Assistant Superintendent of Teaching, Learning and Accountability at Glen Ellyn School District 41 in Illinois. A former K–12 teacher, she has worked with students and staff with a wide range of socioeconomic backgrounds.

Hector Montenegro, EdD, provides training on instructional strategies for English learners, leadership development for administrators and instructional coaches, and the teacher coaching process through the use of technology.

Carol Rothenberg has worked with elementary and secondary schools through the New Arrival Center for the San Diego Unified School District, training teachers and administrators on effective programs and instruction for English learners.