Absolutely. In my (OCA) church, the catechumens have an hour of question and answer session before the Hours (preparatory prayers before the Divine Liturgy), during which all sorts of concepts are discussed and explained in line with the teachings of the Church. It includes theology, history, and praxis. So, there is no rote memory.
In the Orthodox Liturgy (as it used to be in the Latin as well), the Cathecumens are asked to leave after the readings of the Gospels (The doors! The doors!"). Of course, they don't have to leave as they used to, but sometimes stay for the Eucharistic part of the service, but they cannot partake of the of the Eucharist.
We still do that! Right after the homily, before the recitation of the Creed, the catechumens are dismissed to "break open the Word" that had just been proclaimed. I am particularly strict on making sure that the catechumens do not witness the Mystery of the Eucharist until after Easter Vigil. With all they have learned about the Eucharist, they are HUNGRY for it by then!
Regards