If you're transferring to a working person, 2 years is fine. It was 2 years for me too. Two years' worth includes liberal arts subjects.
It's easy to understand if you imagine a medical book or a computer technical term for a book, but that kind of thing is Wakewakame-chan, even if it's written in Japanese, isn't it? It doesn't mean that if you can read Japanese, you can understand it... I know what is written to some extent, so I can understand it, and I can absorb the plus α part.
At university, we aim to be able to “understand what is written to some extent.” Therefore, I study history, thought, language, Buddhist culture, folklore, etc. from a broad Buddhist perspective.
One professor said, “I thought I'd research Shohō Genzō by Dogen Zenji, but since Shoho Genzo is based on the Kegon Sutra, my teacher told me to do the Kegon Sutra first. So I began my research on the Kegon Sutra, and even after 30 years, I couldn't see the end at all.” They were lamenting.
... but undergraduate students don't go that deep and narrow. It's like learning broadly and shallowly (of course there is a lot of weight for each denomination), choosing a field of expertise in a seminar, and finishing only research in that field of expertise with a graduation thesis...
Buddhism doesn't have a so-called “one truth” like the Bible or Koran. It's the 84,000 Dharma. If you try to do it broadly and shallowly... actually, that alone isn't enough for 2 or 4 years...
Not everyone graduated from a Buddhist university. There are quite a few things that seem like they actually just came out and didn't study at all. Even so, you can become a full-fledged monk. That's because the important thing isn't college graduation, but training.
Well, what is important about studying at university is training how to learn without making a mistake even on one person's path.
The way to choose and read books is very different between those who have studied seriously at university and those who haven't. So rather than what happens at university, I think it has something to do with room for growth after returning to a local temple or flexibility in understanding other denominations. Of course, there are plenty of exceptions on either side.
Nevertheless, for many monks, an ideological foundation is created at university. What is ascetic practice? That's because that direction is also an idea. I was just attending college and having fun, so I spent the first 1 to few years going up the mountain to the ascetic dojo, saying, “I didn't come here to say wakaran in this sense!” There is also a pattern where I ended up spending time for nothing...