Please note: This is a Sole Source Notification. This letter serves as confirmation that Essential Education Corporation is the sole creator, owner, copyright holder and vendor of the following digital-based educational programs and workbooks: Proprietary Digital Programs: Proprietary Workbooks: TABE 13/14 Academy™ ABE Essentials Workbooks, TABE 13/14 CASAS GOALS Academy™ ABE Essentials Workbooks, CASAS GOALS GED Academy® Essentials Writing & Language Skills HiSET Academy® Essentials Reading Skills Computer Essentials™ Essentials Math Skills Work Essentials™ SMART Skills Money Essentials™ College Essentials™ Professional Development Series Pricing for all Essential Education Corporation products is determined based on fair market value and is considered competitive and reasonable within the industry. Essential Education Corporation is a registered federal entity and complies with all necessary regulations for intragovernmental purchasing. Our company details are as follows: • DUNS Number: 193194326 • Tax Identification Number (TIN): 90-0019309 • NAICS Codes: 611691, 611699, 611710 • SIC Code: 8299 • PSC Codes: R419, U009, U099 • FSC Codes: 6910, 7610