In a parallel direction to his artistic life, he taught at the :
- Secondary School of Phu-Xuân in Huê (1938-1939)
- Applied-Arts School of Hanoï (1952-1954)
- Fine-Arts School of Gia-Đinh (1954-1964)
- Marie-Curie and Regina Mundi High-Schools of Saïgon (1964-1972)
Some of his students became confirmed artists, figures of the contemporary Vietnamese Painting and among them, a few settled and have worked abroad since then.
![Avec ses élèves de l’École de Gia-Dinh, 1954](http://www.nguyensao.fr/wp-content/uploads/2015/11/1954_1208_premierePromotionClassePreparatoireENSBAGD_bas-300x212.jpg)
![Discours d'inauguration, École des Beaux-arts de Gia-Dinh, 1954](http://www.nguyensao.fr/wp-content/uploads/2015/11/1954_0000_vers_nonDate_DiscoursInaugurationESBAGD_bas-300x259.jpg)
![Avec ses élèves en extérieur, 1955](http://www.nguyensao.fr/wp-content/uploads/2015/11/1955_0000_annees_nonDate_demoEnExterieurGiaDinh_bas-300x207.jpg)
![Avec M. Le Van De, Directeur et Mme Marie Baranger, École de Gia-Dinh, 1959](http://www.nguyensao.fr/wp-content/uploads/2015/11/1960_0000_annees1960_nonDate_MarieBarangerAGiaDinh_bas-191x300.jpg)