Counselor Assignments for 2022/2023

Counselor Bios

  • Mrs. Dietz  is new to Great Valley this year and she is looking forward to working with the Great Valley Community.  Mrs. Dietz has worked at the Chester County Intermediate Unit as a Mental Health Specialist and a School Counselor.  She has worked with students in Middle and High School.  Outside of school, Mrs. Dietz enjoys running and also spending time with her husband and two children. 

    Mrs. Illig is a certified school counselor.  She has professional experience at the middle school and high school level. Mrs. Illig is also a member of the Student Assistance Team (STAR Team). Outside of school, she is a board member of a non-profit organization and enjoys volunteering in her community. Mrs. Illig is married and has two children.

    Mr. Riley He has enjoyed working with children ever since he started his educational career at West Chester University. He has worked with young people at the Devereux Foundation as a residential counselor, instructing martial arts in the Caribbean, and facilitated grief groups at Peter’s Place. Since receiving his degree from Villanova University in 2004, Mr. Riley has been a school counselor at Valley Day School, and Marple Newtown Middle School. Outside of school, Mr. Riley enjoys grilling for his wife and three children.  Email 


    Ms. Harris joined GVMS in 2019.  She previously worked with elementary school students, but is enjoying the middle school experience! She likes playing tennis, spending time with her nieces, and being on the beach.  Philadelphia sports are her favorite, and going to Dollar Dog Night at Phillies Games are the best.  She is here to support all of the students, working with students in groups and individually.  Feel free to email her at

Role of the Counselors

    • Individual student support
    • Small guidance groups to enhance the development of social and/or coping skills
    • Developmental guidance lessons for each grade level
    • Consultation with parents, teachers, and staff
    • Crisis intervention
    • Career education
    • 504 building facilitator
    • Facilitation of gifted screening and process
    • Child Study Team coordinator
    • Coordinator of school input for psycho-educational evaluation process
    • Member of the Functional Behavioral Assessment Team
    • Assistance with student transitions (5 to 6 and 8 to 9)
    • Coordination of efforts with other school specialists and coordination of referrals to outside agencies
    • STAR Team coordinator
    • Coordinate high school course selection for 8th grade
    • Participant in School Refusal Process
    • Building liaison for homebound instruction
    • Orientation for students new to GVMS
    • Collaboration with the administrative team
    • Planning assemblies to support a positive school climate
    • Serving as members of various district committees
    • Coordinating student recognition programs
    • Assisting families in need of scholarships for school trips