I graduated in December, took my boards in January, and passed.
Personally, I like the advice that our instructors gave us: that review classes can be helpful, but they are expensive and you can study for the exam and pass without taking them. We were told to evaluate our self study skills and consider whether we could be motivated to review on our own or whether we needed a class structure to follow to keep up the studying. We were told, if we decided to study on our own:
1) to get a good review book with questions (flip through the book and look at the content, read some of the questions to make sure that they are truly NCLEX questions looking for understanding rather than recall)
2)to use the computer programs available at the computer lab/library to practice (I found CAT RN useful and it works just like the test, NSNA's CAT test questions are good too), computer programs can be expensive too.
3) to do a lot of practice questions to get used to NCLEX questions and help with review (we were told 1500 minimum)
4) pace yourself, start with review, uses questions to evaluate yourself for weak content areas, (7 weeks was recommended, I did it in 5)
5) if you have a study group from school, keep meeting and study together (we did it once a week, for each area there was always some one that knew it well and served as a good resource, and we kept each other motivated)
I don't know anything about the Lagerquist classes, however I do have friends who did Kaplan. Some have stated that they would have liked to have done more actual content review in the class, but that they did a lot of study questions, practice tests, test taking strategies. Their CAT simulator program is also supposed to be pretty good.
Each member of my study group had different NCLEX books, so in study group we had a wide variety of questions and study tips. Two of my group members had the Kaplan review and questions books, they liked them. I used NCLEX Review Made Incredibly Easy and the question book that goes with it (it looks hockey, I bought them at a CNSA conference because the were on sale cheap but it had a good basic content review and I finished it with a good idea of what areas needed to be reviewed in more depth with my notes).
Hang in there and don't let the test freak you out (I lost way to much sleep over that test). You've been in school for a while know and you probably know what kind of studying works best for you. Stick with what works for you.
CONGRATULATIONS! HAVE A GREAT FINAL SEMESTER AND GOOD LUCK ON YOUR BOARDS.