Union apprenticeship sign-ups near St. Louis

The training centre near St. Louis opened applications for apprenticeships in electrical and welding trades. Classes are in the evening and work is during the day. How hard is the test?

Thanks for writing this out. I went through something close to it 2 months ago, and it settled down once I kept a simple log of every call and form.

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