Is it ok for a teacher to not have an education degree or a master's degree?

hi im a senior in a catholic private high school and i have a teacher who teaches Doctrine (theology cl) and first off thats my number 1 topic cause im a very devout catholic, and second i love the teacher teaching it cause he's mad chill and very nice and laid back. plus im getting an easy "A" in his cl. but i remem,ber one cl i asked him what he majored in college and he said that he majored in theology and philosophy but heres the thing he only got a bachelors degree in them. now not that i care nor do i want to become a teacher, but do teachers need not just a master's degree, but a master's degree in any type of education course? jw thats all. i mean i really dont give a crap hes a great teacher better than everybody else in that school, even better then the people who have doctors degrees.