After graduating from high school, Rosado del Valle enrolled in the University of Puerto Rico, where he took art classes under guidance of Cristobal Ruiz.

[1] In 1946, Rosado del Valle went to New York where he attended "The New School for Social Research" and studied under the guidance of the Cuban painter Mario Carreño and the muralist Camilo Egas.

In 1950, he was the co-founder, along with Torres Martino, Lorenzo Homar, Felix Rodriguez Baez and Rafael Tufino, of the "Puerto Rican Arts Center".

In 1965, Rosado del Valle won a gold medal for his art work, from the "Friends of Puerto Rico Society of New York".

In 1998, he won the art and culture award from the "New York State Puerto Rican Hispanic Task Force Conference."