Its true that many Evangelicals know their Bible upside down and backwards, and compared to them Catholics sometimes seem ignorant of the Bible. But that's only an appearance.
Average Catholics asked today how often they read the Bible likely would say that they do not read the Bible regularly. However, if asked how often they read Scripture, the answer would be different. Practicing Catholics know they read and hear Scripture at every Mass. Many also recognize that basic prayers Catholics say, such as the Our Father and the Hail Mary, are scriptural. But for most Catholics, the Scripture they hear and read is not from the Bible. It is from a worship aid in the pew........Once the printing press was invented, the most commonly printed book was the Bible, but this still did not make Bible-reading a Catholic’s common practice. Up until the mid-twentieth Century, the custom of reading the Bible and interpreting it for oneself was a hallmark of the Protestant churches springing up in Europe after the Reformation. Protestants rejected the authority of the Pope and of the Church and showed it by saying people could read and interpret the Bible for themselves. Catholics meanwhile were discouraged from reading Scripture.
Identifying the reading and interpreting of the Bible as “Protestant” even affected the study of Scripture. Until the twentieth Century, it was only Protestants who actively embraced Scripture study. That changed after 1943 when Pope Pius XII issued the encyclical Divino Afflante Spiritu. This not only allowed Catholics to study Scripture, it encouraged them to do so. And with Catholics studying Scripture and teaching other Catholics about what they were studying, familiarity with Scripture grew.
-- excerpted from Changes in Catholic Attitudes Toward Bible Readings
Found at the United States Conference of Catholic Bishops website
Facts are pesky sometimes.