§1. Lay persons are bound by the obligation and possess the right to acquire knowledge of Christian doctrine appropriate to the capacity and condition of each in order for them to be able to live according to this doctrine, announce it themselves, defend it if necessary, and take their part in exercising the apostolate.
§2. They also possess the right to acquire that fuller knowledge of the sacred sciences which are taught in ecclesiastical universities and faculties or in institutes of religious sciences, by attending classes there and pursuing academic degrees.
§3. If the prescripts regarding the requisite suitability have been observed, they are also qualified to receive from legitimate ecclesiastical authority a mandate to teach the sacred sciences.
Source: Code of Canon Law (Vatican.va)