I heard once that the council of Trent, or perhaps the Roman Catechism, made reference to the fact that laymen need to be taught a better understanding of Holy Mass. So far I have not found the citation. Would anyone here by some chance know where I can find this or if it even exists?

If you have the Roman Catechism, you can look up Part II: The Sacraments, The Eucharist, The Sacrifice of the Mass.

The Catechism of the Catholic Church teaches the same in paragraphs 1356-1381.

Ah I see it. Thanks.