The Catholic Church did teach people to read. They were the Continent-wide INSTITUTION that taught people to read. Latin was the only literary language in the West until Chaucer popularized a literary Middle English (14th century) and Dante a colloquial and literary Tuscan Italian (also 14th century) --- and the Church taught Latin not only for Scripture, but for philosophy, astronomy, medicine, mathematics, history, geography,physics, the Triuvium and the Quadrivium --- you know! --- architecture and public works, government, law, courts, the military, trade and commerce --- because there was a Latin-speaking-and-reading culture from Prague to Belfast and from Oslo to Palermo.
This was vastly accelerated by the Catholic Gutenberg, whose development of mechanical movable type printing started the Catholic Printing Revolution and is widely regarded as the most important event of the modern period, and led to the Catholic Renaissance and the explosive growth of printing and reading of all kinds, very much including Scripture.
For your information.
Saying the Church didn't teach the common people to read is like saying Aunt Jemima don't make pancakes.
...she doesn’t....she makes pancake MIX...;)
They didn't want the common folk to read the Word....notice the Reformation happened as the Word became more available.
Your own USCCB admits catholics were not encouraged to read the Word until the 20th century.