National Conservatory of Paris, South American School of violín in Caracas, San José, Costa Rica, the Conservatory of Smyrna, High Conservatory of Madrid (organized by the Ministry of Culture), High Conservatory of Valencia, Guest professor to the Youth Orchestra of Cataluna, the Youth Orchestra of the Community of Valencia,  courses in Morella and Segorbe, and the High Conservatories of Malaga and Sevilla. 

Many of León Ara’s students hold positions as professors in schools of High Musical training in Belgium and Spain.  Many others hold positions as members of almost all the great  Belgian and Spanish orchestras. 


León Ara is regularly invited to be jury member in international music competitions  in the discipline of violin or others in competitions such as:

   Pablo Sarasate, Pamplona, Spain

   Henri Wieniawski, Pozna, Poland

   Joaquín Rodrigo, Madrid, Spain

   Georg Enescu, Bucharest, Roumania

   Andrés Segovia International Competition, Castle of Leeds (Kent), UK

   Pittaluga, Alessandria, Italy

   Tárrega, Benicasim, Spain

   Radio France, Paris, France

   Koblenz, Germany