Tess Winiarski

About Tess Winiarski

Defines the academic vision and quality standards at Preptiviti. Her mission: bring the same structured, classroom-tested Cambridge preparation that works inside academies to every student who needs it — without diluting rigour.

Guides written by Tess Winiarski

All levels

CEFR english levels (A1-C2) in 2026: the complete guide

English levels according to the CEFR (A1, A2, B1, B2, C1, C2) are the international standard for describing...

15 min

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