16 Printed instructional and teaching manuals, printed conference materials, printed guides for students and teachers, and other printed materials, namely, books, booklets, pamphlets, teaching materials, test booklets, guides, whitepapers, workbooks, reports, brochures, written articles, newsletters for use in certification and recertification training, all in the field of data analytics, data systems, data security, and data science; printed educational materials, namely, printed examinations that evaluate an individual's proficiency in understanding topics related to data analytics, data systems, data security, and data science