John Holt founded Growing Without Schooling magazine in 1977, a seminal publication that ushered in a radical shift in perceptions of education beyond the confines of traditional school settings. Farenga joined GWS in 1981 and, following Holt's passing in 1985, Farenga assumed the mantle of leadership, shepherding the magazine through a transformative era until it ceased publication in 2001.

A prolific writer and publisher, Farenga's contributions span a diverse array of genres, from speeches, books, and articles to videos, enriching the discourse on homeschooling and unschooling. Noteworthy publications include entries in esteemed references such as the International Encyclopedia of Education and the online edition of Encyclopedia Britannica.