Union apprenticeship sign-ups near Boston - first time posting

I heard of an apprenticeship with paid on-the-job training for people changing careers. I worked as a graphic designer before this. Classes are in the evening and work is during the day. How hard is the test?

Bring your transcripts and any proof of work history. They asked for both in the interview.

The aptitude test was mostly maths and reading a diagram. Free practice tests online were enough for me.