Definitions
The American Heritage® Dictionary of the English Language: Third Edition. 1996.
Nonsectarian, adjective: Not limited to or associated with a particular religious denomination.

By-Laws
Article II - Purpose
Section 1. The mission of the Organization shall be to serve the diverse interests of home-based education in Washington State. WHO shall be nonpartisan, nonsectarian, non discriminating in its view of homeschooling and participation in its activities.

Clarification - Nonsectarian Policy
In order to avoid the perception of association, or implied affiliation, with a particular religious denomination, it is inappropriate for WHO to include a religious service, ceremony or practice as part of its sponsored activities, events, or presentations. In those instances where WHO is providing a framework for the individual expression of homeschooling experiences, styles, perspectives or preferences (i.e. graduation parent statements, convention workshops, curriculum vendors, student exhibits) WHO will not attempt to control or censor that expression in terms of religious content.