Wayland Town Crier 3/10/10: New principal of Wayland Middle School will start July 1. Superintendent Gary Burton has selected Elizabeth (Betsy) Gavron of Natick as the next principal of Wayland Middle School beginning on July 1. Gavron will replace John Kavaleski, who is retiring in June after serving as a Middle School administrator for 27 years. She met with the School Committee on Monday. From a pool of 60 candidates from 17 states, Gavron emerged as the individual who possessed the professional and personal skills and talents identified as essential for this position. Gavron is currently serving as the assistant principal of Wayland Middle School, after teaching mathematics there for 10 years, during which she also served as house leader for nine of those years.