What happens if you fail maths in the leaving cert?

People say that if you fail maths you basically fail the leaving cert. So most people drop to ordinary but ordinary is still quite hard so recently many people in my school have dropped to foundation. Will they even be allowed into college with foundation? and if someone was to fail maths but get good points Eg 400 would they be still denied access to college?

AHickey— 11/05/16