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Meet our Corona Tutoring Staff


Great Teachers Inspire

Our tutors and staff in Corona/Norco consist of passionate educators who love inspiring children to succeed. Warm, caring and great at relating to kids, our tutors in Corona know how to engage and motivate each child in a personal way—building confidence and smiles, as well as skills and better scores. We selectively choose tutors who know local curriculum and can link Sylvan lessons to what’s being taught in school. Get to know our tutors and staff in Corona/Norco!

  • Kulvinder Griffin, Executive Director

    Kulvinder Griffin

    Executive Director

    Kulvinder Griffin received her Bachelor of Arts and Teaching Credential at Minot State University in Minot, North Dakota. She taught grades three through five before becoming a Reading Recovery teacher. Kulvinder has been with Sylvan for over fifteen years in the positions of Teacher, Test Administrator, Director of Education and Center Director in the Diamond Bar, Chino Hills, Claremont, Glendora and Chino centers. As the new owner of the Corona Center, Kulvinder is very excited to work with the students, parents, and the community. When not working, you will find Kulvinder trying to keep up with her two young sons Brycen and Shane.
  • Lauren Rios, Director of Education

    Lauren Rios

    Director of Education

    Lauren received her Bachelor’s degree in General Education from the University of Southern California. She has worked with Sylvan for almost 10 years now, starting as a Teacher and then as Director of Education. She enjoys getting to know the families and students, and supporting their growth. When Lauren isn’t at Sylvan, she’s trying to keep up with her two young daughters.
  • Juanita Bergreen, Instructor

    Juanita Bergreen


    Juanita is a instructor in Corona, CA with a gift for working with kids. While Juanita has many tutoring talents, she finds the greatest joy in math tutoring. She earned her bachelor's degree at Utah State College. When Juanita isn’t at Sylvan, you’ll find her reading, biking, and traveling.
  • Garrett Lloyd, Instructor

    Garrett Lloyd


    Garrett is a substitute teacher in Corona, CA with a gift for working with kids. He specializes in our math, reading, and SAT Reading programs, along with facilitating our EDGE programs. Garrett also administers the diagnostic and progress assessments. He likes to help students understand new concepts: "It's one of the best feelings in the world!" Garrett studied at CSU Stanislaus receiving his Bachelor's in Psychology & Criminal Justice before finding a love of teaching and receiving his credential from CSU San Bernardino. When Garrett isn't at Sylvan, you'll find him camping, reading, and fishing.
  • Courtney Fischer, Instructor

    Courtney Fischer


    Courtney received her BA in Literature from UC Irvine and her Masters in Education from National University. Courtney specializes in our reading and writing programs. She loves to inspire others to explore the art of literature and the written word. When Courtney isn't at Sylvan, you'll find her exercising, writing, and going on adventures.
  • Peace Dada, INSTRUCTOR

    Peace Dada


    Peace received her Bachelor's Degree in Mathematics from the University of California, Riverside. She specializes in our math, reading and SAT Math programs. Peace is passionate about helping students grow and overcome their learning obstacles. When Peace isn't at Sylvan, she enjoys spending quality time with her friends and family.
  • Dawn Sauby, INSTRUCTOR

    Dawn Sauby


    Dawn received her BA in Psychology with an emphasis in Child Development and Counseling from California State University, Fresno. Dawn believes her purpose in life is to help children recognize their potential and achieve their goals in all subjects. She has a passion for teaching and mentoring, especially students preparing for college and secondary education. Dawn also loves teaching dance, gymnastics, and playing board games when she is not at Sylvan.
  • Ryan Nelson, Instructor

    Ryan Nelson


    Ryan has been tutoring for over ten years. He specializes in our math, reading, and SAT/ACT Prep programs, as well as being skilled in high level math. Ryan enjoys tutoring because it leads to a sense of discovery for both the students and the teacher. He studied in Mathematics at California Baptist University. When Ryan isn't at Sylvan, he enjoys outdoor activities and playing music.



    Cailena received her BA in Creative Writing from the University of California, Riverside. She is currently working towards her Master’s and teaching credentials in Special Education at California Baptist University. In her free time, Cailena enjoys going on food adventures, staying active and traveling.
  • Shaina Letbetter, Instructor

    Shaina Letbetter


    Shaina has been a paraeducator for the Corona-Norco Unified School District since 2014. She has received a Bachelor’s Degree from Cal Poly Pomona. Though Shaina has many tutoring talents, she enjoys helping children with reading and writing the most. Shaina likes to teach the students to do their best and takes pride in seeing them learn and grow in confidence. When Shaina isn’t at Sylvan, she enjoys reading, crafts, and archery.
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    This information is pulled from the Manage My Center Information section on slclink. Visit that section on slclink to update your center’s contact information.