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If you underpreformed or overpreformed practicescores on the SAT, ACT, or ... would expect to on a practice test as long as your ... practice tests properly simulated realtesting conditions. ...
The only thing I would add is that a lot of folks do score at least a few points lower on the actual LSAT vs. practicescores. So if you want that upper 160s, you'll want to aim for PTing in the lower to mid 170s.
It is rare, but possible, to reach high 160s to low 170s in 3 months but it does seem pretty rare. If you share your practicescores we can share some tips.
The scores from your practice tests and from your real tests should be about the same. I have heard this from other users; in addition, I have taken 2 actual tests and these scores were reflective of my practicescores.