Hi Pastor,
I'll offer my two cents as a rising senior at Covenant College going into a STEM field.
First of all, my top recommendation for any college looking back is to ensure there is a faithful church nearby. Many students come into a Christian college looking for what a church should offer. I think it is often best to go to somewhere near home (especially a commuter school if one is available) and stay involved in your local church and family while at school. This is especially the case for STEM, where you want to ensure you are getting a good education and good opportunities in addition to the worldview.
That said, I have really enjoyed my time at Covenant College overall. I'll speak to the STEM part primarily, although I would be happy to discuss it's shortcomings and benefits in other areas as well.
The Computer Science program is excellent if you're interested. The professors, Drs. Hunt and Humphries, are both excellent teachers with strong educational background and work experience. I am only doing a minor in CS officially (I’ll be taking some classes beyond what is required) with a major in Economics, but already I have had many opportunities to work. I have interned this summer in a good position and I had multiple offers available, many which were helped to be procured by these same professors, and I have already begun interviewing for work in the fall. Pretty much all of the graduates that seek after jobs with CS majors are able to get jobs from my understanding. So in that respect, you are well prepared.
The classes are very good, with both professors placing a lot of emphasis on projects. The classes are not as rigorous as they could be in terms of highly technical material (it depends on the class, I haven’t taken as many high level CS courses), but you learn the skills well. Faith integration often plays out well in these classes as well.
Our engineering program is also quite good and difficult—many more students start it than finish it. However, there is not a full engineering degree at Covenant. We have a dual degree program, usually with Georgia Tech, which allows students to get a BA from Covenant and a BS from an engineering school in 5 years. This could be a good option for someone wanting both experiences.
I have a good impression of our natural sciences programs. I know that the chemistry professors are both members of my church, Drs. Zuidema and Mehne, and good godly men. The latter serves as an elder. In general, I have an impression that the science department is more conservative than even the Bible department, although I do not know that those in the biology department are literal 6/24 creationists.
The math program is not so developed, with only one professor and some adjuncts and professors from other departments picking up the rest. I would not recommend Covenant to study math.
I don’t know if you count Economics in STEM, but I will be happy to speak to you about Economics if you’re interested.
All professors across disciplines are required to submit to the Westminster Standards, although a wide degree of exceptions are allowed both on paper and in practice. Even so, Covenant is the only liberal arts college I know of that requires this. Being a liberal arts college, there are a lot of interesting courses to take outside of STEM courses as well, and required Bible courses. I will warn that there is quite the spectrum of Reformed thought at Covenant, from radical two kingdoms to Neo-Calvinist, pre-, a-, and post-millenialists, classical apologists and strong presuppositional apologists, and so on. There are less professors of the most conservative bent at the college. Furthermore, chapel tends to disregard the regulative principal of worship and the speakers range from very solid pastors and teachers to heretics (e.g., last semester there was a Romanist and a PCUSA minister).
There are many good students at the college, but there are those who are less serious in their faith as well, and getting in the wrong crowd can be dangerous. That said, I’m very grateful for many of the friends I have made at Covenant and many of the strong relationships I have with professors.
As far as churches, there are quite a few PCA churches across the spectrum, an OPC, and a few EPC as far as Presbyterian churches. There are a couple of churches I would highly recommend if you’re interested. There are also some confessional Reformed Baptist churches in Chattanooga, a primitive Baptist, and various Calvinistic Baptist/non-denomination churches around. I don’t know too much about them, however.
Let me know if you have any questions and I can try to answer them!