Can you get in to a union without a GED or a high school diploma?

Um yea i went all 4 years to high school but i didnt graduate proly cuz i didnt go to the last testing date but W/E stupid me but W/E. Actually im doing alot better than most people wit diplomas or GEDs kinda werid hu, but yea my gf family own a bizzzzznesssss and im good were im at wit the money deal in all i got my own car own phone n stuff but i wanna make more (who would'tn) so i need to know if u need a GED or high school diploma to get in to a union, its the carpenters union being a (millwrite), they pay excellent and they travel around the U.S witch ive wanted to do all my life, so this is the chance jes hope it aint spoiled because my lack of wanting to go to school.