(IRS) The IRS is offering informative workshops for small and medium-sized nonprofits.  Exempt Organizations specialists are running the workshops, which will include information about maintaining exempt status and following tax law.   The workshops are especially helpful for administrators and volunteers involved with tax compliance for a 501 (c) (3) organization.  The workshops will be held in Seattle, Washington from May 11-13 and in Washington, DC from May 25-27.  Attendees must pre-register.