Are Pre-Apprenticeship Programs worth it?

19M and looking to get into electrician work. The program is 12 weeks long with uniforms and gear provided all completely for free. I have no connections with anyone in a union or tradesman (besides the one who told me about it, he now makes 70/hr as a union carpenter after doing it himself). I’ve been told the program is very well known and has a good repertoire of getting their students into a Union apprenticeship right after completion. Classes are from 7-3 everyday so I would have to quit my job to make the commitment.