You might want to look at Montana Tech. Not a 3-2 but in the WUE and may have the opportunity for classes at the University of Montana as well.
@eandesmom , what is WUE ? Not familiar with that word. We have been looking mostly at smaller( under 10k students) private schools that have engineering 3-2’s or engineering in house. I will take a look at both University of Montana and Montana Tech.
WUE = Western University Exchange - discounts for tuition for member states.
@svcamom ^ what @ErinsDad said 
check each school as some are automatic and some are stats based. I believe Montana Tech should be in the right size range but less sure about the University of Montana proper.
You hadn’t mentioned cost as a concern but sometimes the WUE can be a happy coincidence. It is generally not the flagship schools, often smaller speciality or directionals and good for mid stats kid. Also, stop by the 3.0-3.4 2017 kid thread, even though you are 2018 there are wonderful folks there with great insight and input for kids in that range. Some of whom are similarly lopsided as your S is.
@svcamom, there’s been a lot of discussion in the past about those 3+2 programs, which many of us have looked into at one point or another. Not saying nobody ever pursues the +2, but I would argue they are the RARE exception. Aside from forcing the student to pick up and switch schools before his classmates do, they frequently add on a fifth year of full-pay tuition.
It might be worth looking at some of the smaller liberal arts schools that also offer engineering. Those allow the student to graduate in four years but to still get to attend a school with a strong liberal arts curriculum. Not sure what your son’s GPA is, but that ACT is very strong. Those schools (Lafayette, Union, Trinity) tend to be pretty selective, but it’s worth doing a little investigating I would think. Maybe check out Clarkson.
Also, those smaller private engineering schools like Stevens (RPI, WPI, Rose Hulman) can be a great option (if you can afford them). Then there are all those smaller public tech schools (Michigan Tech, Illinois Tech, South Dakota School of Mines, etc.).
The key with engineering is ABET accreditation. They have a great search engine too: http://main.abet.org/aps/Accreditedprogramsearch.aspx
Also, I’ve found the folks in the Engineering Major forum to be incredibly helpful: http://talk.qa.collegeconfidential.com/engineering-majors/
@svcamom I would try to avoid the 3+2 avenue. Like @LucieTheLakie pointed out there has been alot written on CC about the pitfalls of these programs. If your DC is truly interested in engineering, then they should absolutely choose a school with an ABET accredited program. The 3+2 programs rely heavily upon “hope.” A quick search here in CC will bring up the many discussions/debates on the topic. The overwhelming argument is against the 3+2 direction.
One of my favorite websites to locate engineering schools is this one…
http://best-engineering-colleges.com/
I would suggest that you disregard the rankings and focus on the map and the comprehensive lists.
@svcamom you are welcome! He would definitely get real winter at all 3 of those schools.
@eandesmom We don’t have to worry about cost( huge 529 ), but we are more concerned with the right fit for our son.
I realize that there isn’t anything perfect, but we would like to know that which ever college he both likes and is accepted to is the best fit for him.
@STEM2017 , thanks for the tip on 3-2’s, I will now focus on small schools with Engineering Dept.'s in house.
I agree that Clarkson could be a good option as well.
Mid size schools 13-15k with engineering (check for desired discipline though) could also include Western Washington University, University of Wyoming, university of Vermont.
Other smaller interesting options to explore would include Bradley University, Lehigh, Lafayette.
@svcamom, what we found when looking at LACs where daughter could do a 3+2 programs was the ‘3’ was just too small and limiting. The physics and math departments would only have a handful of professors and only offer a few courses per semester. If you missed a semester or couldn’t take a course for some reason, you might have to wait until the next time it was offered and that would put you off sequence. The other things to consider were whether admissions to the ‘2’ school was guaranteed and how many students had actually gone on to the second school. I was startled when one school said FIVE students had gone on to the program in the last few years. The original school was small, but 5? The original school at only 1200 students was way too small for us too.
There are a lot of good engineering schools which keep the size of the school at 3000-5000, but yet offer enough courses. My daughter ended up at such a school with 3500 students, but there are plenty of math, chemistry, physics courses offered every semester.
@twoinanddone , Which school did your daughter end up at ?
She’s at Florida Tech. It immediately felt right to her to be at a tech school where she’d be in the majority studying STEM, and not in the minority at an LAC with limited science and math offerings.
My other daughter is at Wyoming, and while 10,000 students may seem big to you, it really isn’t. My daughter (not in engineering) has always known a few students in every class, even in the few really big (200 student) lectures. The big lectures also have a discussion group with about 30 students. She only knew 2 kids (both from kindergarten) when she started, but has met a lot of kids in the dorm, clubs, sports. She met a few kids at the summer orientation before freshman year and found them her first week of school. Most of her classes have fewer than 25 students in them, and she always seems to know 1 or 2.
I’ve found it much easier to deal with the big school’s administration and FA offices, and really just about any other person too, than at the small school. For example, both kids had an overage from FA this semester after getting their loans. My daughter at Wyoming had her overage direct deposited about 3 days BEFORE her classes even started. When she waived the student health insurance, another refund was issued within days. Other daughter? Her bill was due on Aug 11, classes started Aug 18, the overage was processed on Sept 1, and she’s still waiting for a check. She signed up for direct deposit, but somehow the new system didn’t ‘take’ that request, so a paper check was issued. It is ALWAYS something at that school, but she likes it, has great financial aid, so I deal with it.
Smaller is not always better or easier.
Dartmouth has a 2+1+1+1 program which helps to eliminate the problem of kids wanting to graduate with their friends at their home institutions. While many of the participating schools other than Dartmouth require pretty high stats, maybe Hobart is a little less precious in that way . . .? (and they have real winters!)
http://engineering.dartmouth.edu/academics/undergraduate/dual/
Unfortunately, I don’t think there are many “ordinary” students at Dartmouth. Although that’s good to know for stronger students who may just not have the HS GPA to get into an elite school as a freshman.
Do you know how many students complete that program each year, @Dustyfeathers?
@LucieTheLakie Sorry! No idea. I just know that the program exists . . .
^
Not really ordinary.
It seems this thread did not survive as a safe space for the parents of ordinary kids for long.
I didn’t mean to distract from the space for ordinary kids. I pointed out that one school–Hobart–has stats at the 3.3 GPA range. That’s fairly ordinary. Wheaton also has fairly ordinary stats. Those schools also can participate in the Dartmouth program. FYI