Since 1992 by Constantin Tegos, TEGOS Publishing is specialized in french as a foreign language (FLE/FLS). Since then, a large number of books (A1, A2, B1, B2, C1, C2 of the DELF/DALF), for the preparation of diplomas set up by the CIEP, became essential tools for the learners of FLE. Today, TEGOS Publishing covers a wide field in the education of FLE/FLS. Our two put into series “Réussir” and “Je parle français” for the levels (A1, A2, B1, B2, C1, C2 of the DELF/DALF), our grammar books (“Grammaire en contexte A1-A2 + 2CD” et “Grammaire en contexte B1-B2 + 2CD”) and our bilingual electronic dictionaries (French <> Greek and English <> Greek) are presented and used in numerous countries. The values livening up in TEGOS Publishing are synonymic of quality and rigor. This in an educational process centered around a continuous educational follow-up in cooperation with the teachers ensuring the success of the DELF/DALF.