Who we are

Launched in 2014, Diglossia is a global language company dedicated to changing lives by fostering language development and literacy throughout the world.

Diglossia's suite of language assessments provide the valid and reliable data you need to make informed decisions when evaluating language program effectiveness, adopting new curricula, and targeting professional development needs.

Using innovative research and technology, our K-16 assessments address the unique needs of the fast-moving language education landscape. We partner with leading scholars and institutions to serve the needs of native Arabic, Chinese, Spanish and English speaking students around the world.

In addition to our Lexica placement and vocabulary assessments, we are in the process of building the first benchmark tests for Arabic language arts which will test vocabulary, reading, and writing against the World Language Initiative Arabic standards.

Our Professional Development workshops offer onsite, online, or blended solutions to help teachers and administrators stay on the cutting edge of best practices in language assessment.

In addition to serving the education sector, Diglossia also works with employers and industries to provide workforce screening and language proficiency tests in both English and Arabic. As the global economy shifts to support knowledge workers, employers are requiring evidence of language proficiency for hiring, and Diglossia creates custom tests to meet those needs.


Mimi Jett

Chief Executive Officer

Mimi is an education-technology leader with more than 25 years of experience in collaborative innovation that crosses multiple industry sectors, markets and geographies. Prior to co-founding Diglossia in 2014, Mimi was Chief Development Officer and VP of Business Development and Marketing for Avant Assessment.

Her record of success also includes General Manager of netTrekker, as well as strategic management positions with Renaissance Learning and IBM Research, where she was appointed to the elite Institute for Advanced Learning leadership council. Mimi sits on several industry advisory boards, including the Software & Information Industry Association's Education Division Board of Directors, and acts as a mentor for innovative entrepreneurs.

Paul Tucker

Chief of Research & Development

Paul has more than 20 years of experience in theoretical and applied linguistics as an educator, field researcher, and test developer. Prior to co-founding Diglossia in 2014, Paul was Chief Product Officer, V.P. Research and Product Development for Avant Assessment, where he was responsible for the design and creation of Avant products and services.

Paul is a member of the International Language Testing Association (ILTA), the American Association of Applied Linguistics (AAAL), the Inter-agency Language Roundtable (ILR), and the U.S. delegation to the International Standards Organization (ISO) Technical Committee 232 on Learning Services for Non-Formal Education and Training, where he serves as a technical expert on language acquisition and testing.