A person has to be male to become a Priest, one also has to be 25 (unless a dispensation is provided).
Education is helpful to becomming a Priest, but often this is provided for in seminaries. In the USA, for example a Priest would tend to have a four year university degree, and four or five years of formation in theology. Most US Priests would then have a Masters or Doctorate degree. However, requirements in other countries or areas may be different, as a general rule; if areas in the developed world have more developed education, wheras areas such as Africa or Asia the requirements are more flexible.
A person wanting to become a Priest would usually talk to their Priest, and arrange for a spiritual director; who would help them with their “discernment” - this is where the church and the individual discern if the candidate has a “vocation” or “calling” to the Priesthood. If someone has got a Vocation then they will pursue it usually either as a Diocesian Priest, or through a Religious Order.
A person is made a Priest by Ordination, by which a Bishop admits the individual to “Holy Orders”. It is the laying on of hands from the Bishop and fellow Priests that the person becomes a Priest. Once a Person is ordained they are ordained for life, however they can be “
dismissed from the clerical state” or “
laicized” - however even after this the indellible mark of holy orders is on the individual, and although they can validly carry out sacraments like the Eucharist; however it is done illicitly (they are not suppost to do so).
To find out the exact nature of requirements for Ordination one would have to find out in what way the person would be seeking holy orders; at a diocesian level, through a religious order and so forth; with the requirements for these depending on the diocese and the order. However, the universal rule is that it must be a male, and the ordination must be administered by a validly ordained Bishop - and the individual must be at least 25 years old (unless a dispensation is sought for the age).
