May have something to do with zenith switching school accreditation from ACICS to ACCSC
http://www.zenith.org/transparency-center/
Accreditation change
In an effort to streamline the accreditation process, we are transitioning our schools to be accredited by one organization—the Accrediting Commission of Career Schools and Colleges (ACCSC). Under the current Zenith structure, our schools are accredited by ACCSC and the Accrediting Council for Independent Colleges and Schools (ACICS).
This transition, currently in process and to be fully completed by March 2017, will create efficiencies and provide a greater opportunity for compliance by having one set of accrediting standards governing our schools.
ACICS has been a valuable partner for us and we are thankful for their continued support. We look forward to continuing to work with ACCSC, which is focused on schools with short-term and diploma programs, and the best match for our current programs and future program development efforts.