as far as I know, Tufts does not send letters out in batches. People generally receive a decision within 6 weeks of interviewing there. and people who are put on hold after interview can be accepted or rejected at any time. the official waitlist begins in mid-May, and many people are taken from the waitlist most years. I was taken from the waitlist in mid-July, and am currently a student there. Word of advice: If you are mentally or physically ill in any way, don't expect certain members the administration at Tufts to be in the least supportive; unless you consider, "oh, just take a leave of absence!" to be supportive 🙄 😡