Sergio is an excellent teacher. He combines his intelligence, humor, and knowledge as a native speaker to create a stimulating experience.

— Leslie Trott

Sergio is a great language instructor! He is friendly, patient, and extremely well-prepared with detailed lesson plans and plenty of opportunity to explore our questions about the material during each session. Even over Zoom, Sergio could tell if we were understanding him or not, giving instruction in both Portuguese and English, which really helped expand vocabulary and listening comprehension.

— Dalen G.

Sergio was fantastic! Patient, well-studied, thoughtful, attentive and willing to work with everyone!

— Buzz Hegerle