Actually, seminarians can major in math or in a particular science, possibilities which are probably more common amongst religious orders, particularly teaching ones like the Congregation of Holy Cross.
As a Holy Cross seminarian at the Old College Undergraduate Seminary at Notre Dame, one’s discernment revolves around five pillars: human, spiritual, intellectual, pastoral, and community formation.
At Old College, one either attends Notre Dame or Holy Cross College to earn the necessary credits for a bachelor’s degree in a specific field. I’m hoping to major in French whilst my roommate wants to pursue aerospace engineering. So you see, you’re really free to major in a field of interest as long as it doesn’t interfere with your formation. The requirements are that you take 30 credit hours of philosophy and 12 credits of theology. This also means that you have to take general education courses in science, math, literature, etc.
During a seminarian’s three years at Old College, he participates in Holy Cross community life by attending communal dinners, Lucernarium, hosting soirées after Log Chapel Mass, and other activities as he gets to know priests, brothers, sisters, and students from Notre Dame, Holy Cross College, and St. Mary’s College. He’s also assigned a particular obedience that he performs to maintain the upkeep of the seminary (e.g. cleaning the Sorin Study, kitchen duty, etc.). First-year seminarians engage in a ministry placement at Holy Cross House, the retirement home for elderly priests and brothers of the Congregation. Second-year seminarians then proceed by serving as catechists in South Bend parishes in conjunction with Notre Dame’s Campus Ministry program. Third-year seminarians must propose a ministry placement to the rector. All of this is supplemented by weekly formation nights, spiritual direction, regular meetings with formation staff, and scheduled retreats.
Fourth-year Old Collegians enter Moreau Seminary (the major seminary at Notre Dame) for their candidate year which is also their senior year at either ND or HCC. After receiving a bachelor’s degree, then Holy Cross seminarians enter the novitiate for one year and return to Moreau to obtain a Master’s in Divinity. It takes about 9-10 years before ordination and profession of final vows.
The Congregation of Holy Cross may be different in regards to its emphasis on education and involvement on college campuses, which reflect its academic charism, but most seminaries also place great importance on taking a holistic approach to the formation of a seminarian.