Tufts’ admit rate for 2014-15 was 17%.
The OP’s test scores are right around the 25th percentile.
(There is a similar issue here as with NEU, where the SAT 25th percentile is really closer to a 31 ACT.)
The OP’s class rank is top 5%, but 90% of Tufts applicants that reported class rank were in the top 10% of their class.
The OP’s GPA of 3.78 is not terrible, but it also is probably lower half for Tufts.
The OP lists 6 AP classes, but no scores, so my guess is that only 3 or less have been completed so far. That’s not a particularly rigorous schedule for a school of this caliber.
All of that combined leads me to believe that in terms of GPA and test scores, the OP is somewhere between the 25th and maybe the 35th percentile of admitted freshpersons at Tufts. So, how does that translate into an acceptance rate? I think that it translates into about 1/3 of the overall acceptance rate, so maybe 6% or so as an RD applicant.
Are there any other mitigating factors? The only other thing mention in the post was ECs, and honestly, they didn’t look like anything special at all.
What about ED? Everyone always gets way excited about high ED rates, but what they fail to consider is that the ED pool is usually much more qualified than the RD pool - there are recruited athletes, recruited URMs, legacy applicants etc…this all varies from school to school somewhat, so you can’t overgeneralize, but the general idea that you get a huge boost from applying ED is a canard. You probably disagree, so let’s just put that aside and take the ED rate as a given.
CollegeData says that the ED admit rate for Tufts is 36%, so let’s take 1/3 of that and we’ve got 12%, which I think is about right, especially given the mediocre ECs.
12% is, I will concede, better than “no chance” but still…
I think the OP also has pretty slim odds at BC and NEU as well. The other schools on the list are a lot more realistic in my opinion.