Union apprenticeship sign-ups near Knoxville - any advice?

The training centre near Knoxville opened applications for apprenticeships in electrical and welding trades. I would rather hear the honest version than the polite one. Classes are in the evening and work is during the day.

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.