Hey! I'm looking to do the same thing, take phlebotomy classes this summer so I can work while studying nursing. Depending on where you live...I found a couple SUNY community colleges upstate that have phlebotomy, or if you live closer to the five boroughs...York College has phlebotomy. Otherwise...there's career schools
in the city, though they do not accept financial aid or loans. It seems a lot of people go to the Manhattan Institute, but I was little put off by their website, just because it didn't seem too professional. The York College program says it's a 3 hour per week, 9 week certificate program. I found it more reliable of a program, just because it's a CUNY school, and not just a career school (not knocking anyone). I did a google search, and also found Stony Brook also has a Phlebotomy program, but I can't tell if it's offered every semester, it was a PDF flier from a previous semester. I'm going to try calling some schools and asking around. Good luck!