he completed education.
First time I hear somebody using "education" for a driver licence.
As for ATPL, it's very common among the students not being accurate with vocabulary, maybe in order to feel bigger than what they are.
ATPL means the Licence. It comes with experience.
The theorie of the ATPL (which has for the most part the exact same content as the CPL-IR theory) is studied in a flight school in order to get a CPL licence. The law allow you to get the ATPL theory instead of the CPL-IR theory, THAT'S ALL.
So in fact studying the theory at school only means you are working through your CPL. That's a small detail, but it says a lot from the ones showing their way of thinking, more excited by the vocabulary that would encourage the idea to become an airliner driver than becoming a pilot, an aviator.