She taught at the Paris Conservatoire from 1937 to 1939, where Polish pianist Władysław Kędra was among her students, invited by her when she heard him play as she judged the III International Chopin Piano Competition in Warsaw, Poland in February–March, 1937. She also created her own school in Paris and later in Rio de Janeiro and in São Paulo. She gave numerous masterclasses in many countries and created a piano competition. Her many students included Pnina Salzman, Jeanne Demessieux, Lycia de Biase Bidart, Flavio Varani, Cristina Ortiz, Maria Teresa Naranjo Ochoa, Jorge Luis Prats, Gayle Sharlene Brown and James Tocco. Tagliaferro maintained a critically acclaimed capacity for beautifully crafted playing into her nineties. She died at Rio de Janeiro, Brazil.