How do I say “course duration” in Japanese?

Question

I want to say something along the lines of "all engineering courses are four years long".

Should I say something like this?: 各技術コースの専攻期間は4年くらいです。

Is there a more natural way to phrase what I'm trying to say? :( よろしくお願いします。

Answer 1

all engineering courses are four years long

I'm not sure what you call an "engineering course", so that's a problem for translaton. However, probably some of those would be good (alhough I find the last one not very natural myself).

工学の授業は全て四年間かかります。

工学部の課程は四年間の課程です。

工学の授業は四年間に至ります。