"By 1903 political pressures called for English to be the medium of instruction in all grades and President Theodore Roosevelt's new appointee, Roland Falkner, complied. For the next fourteen years the use of English made steady but controversial progress. Many students in the elementary grades found understanding to be difficult or impossible, and learned neither Spanish nor English well. Although the situation was hardly the decisive factor in the Puerto Rican politics of the time, it undoubtedly contributed to the popularity of the pro-independence Unionista party, which went undefeated from 1904 to 1924." [35]
The Asociación de Maestros de Puerto Rico [Puerto Rico Teachers Association] was founded on July 8th, 1911. "As the public school system expanded, teachers united to create an island-wide union and professional organization, the Asociación de Maestros de Puerto Rico... the teachers... promoted the 'regeneration' of their students... Teachers wanted to rebuild the Puerto Rican people and cultivate future citizens of the island patria, children who would be proud of their culture, heritage, and history. This goal clashed with Americanization, for the AMPR leadership was not preparing brown and black students for a subordinate place in the U.S. racial hierarchy. Many Puerto Rican teachers had their own vision for their students, schools, communities, and island, and it did not prioritize Americanization." [33]
In 1936, Franklin D. Roosevelt "summarized the Puerto Rican English language problem, past, present and future: 'It is regrettable that today hundreds of thousands of Puerto Ricans have little and often virtually no knowledge of the English language.... It is an indispensable part of the American policy that the coming generation of American citizens in Puerto Rico grow up with complete facility in the English tongue. It is the language of our Nation.'" [35]This reinforced English presence in Puerto Rico.
In 1949, Villaronga became the first Department of Education secretary under the first Puerto Rican elected governor of the island, Luis Muñoz Marín. Villaronga “...established Spanish as only medium of instruction and English as a subject throughout all grade levels.” [32]
"The attempt to declare Spanish as the only official language in Puerto Rico did not occur until 1992, when the Partido Popular Democrático (Pro-Commonwealth), the political party in power at the time, repealed the Official Language act that established English and Spanish as official languages." [32]
"In 1993, the Partido Nuevo Progresista (pro-statehood) took over the government and reverted to the old language act that established English and Spanish as official languages in the island. This, however, did not change the status of Spanish as the heritage language of Puerto Ricans nor did it replace it as the language of medium of instruction in the public education system." [32]
Spanish was made the official language of Puerto Rico again when the commonwealth party was in power.