English language in Puerto Rico

English is taught in all Puerto Rico schools and is the primary language for all of the U.S. federal agencies in Puerto Rico as one of the two official languages of the Commonwealth. English and Spanish were first made co-official languages by the colonial government in 1902, but Spanish remained the primary language of everyday life and local government proceedings.^[1] English was removed as an official language in 1991 after the U.S. Congress had attempted to make English the primary language in order for Puerto Rico to join the union as the 51st state, but it was brought back as the second official language in 1993 and has remained the co-official language of the Commonwealth since then.^{[2][3][4][5][6][7]}

Spanish remains the most spoken and written language,^[8] and the vast majority of Puerto Ricans do not use English regularly other than some borrowed English words in their ordinary Spanish speech.^[9] Various surveys have found that the majority of Puerto Ricans are not fluent in English.^[10][11] Out of those age five and older, 76.6% of Puerto Ricans did not speak English "very well," and 94.5% spoke a language other than English at home.^[2]