That's a good question, and I think the answer is that it depends. That is, to answer if it's "necessary" to take a course if you have the books really depends on how you define "necessary." Can you achieve a score that you're satisfied with by using only the books? Potentially, sure. So from that standpoint there are certainly people out there for whom the course may not be required to get where they want to go.
But let me explain what benefits I feel the course provides, and why those benefits are more important now than ever. I could go into a lengthy discussion of EVERYTHING a course offers that self-study doesn't---a set schedule and pace, a collaborative environment with other test takers, the emotional and psychological affirmation that comes from group learning, additional assistance and support outside of class, etc.---but to me the biggest benefit is that a course allows for the materials to adapt to you. You have a highly-trained instructor that has mastered this challenging exam and the resources we use to deconstruct it, and that instructor can then tailor the presentation of those concepts to your particular needs throughout the course. I really can't overstate the value of that. To have someone who has scored at a level you are striving for, who can then guide you step-by-step along a path to get you to that level, adjusting and refining the presentation for a customized fit, all the while motivating you to continue to push and excel...well you just won't get that from a book. As much as I love what we've created in text-form, it's simply no match for the dynamic, personalized nature of an interactive classroom.
And the reason I say this type of personalized instruction is more important than ever is that you're facing the most competitive law school admissions field in history. More than ever before, every single point on this test is priceless. You simply can't afford to leave anything to chance, or "settle" for a number that's short of your potential. Will a course guarantee that you'll meet all of your expectations? No. But it will absolutely give you the best chance of attaining the highest score possible, and these days that should be the deciding factor as you weigh your options.
Finally, I completely agree that $1K is a substantial sum, and certainly you should look to get the best return on your investment. In fact, I think that's the operative word: investment. Law school is incredibly expensive, and you're all but guaranteed to graduate with debt in the mid-five-figures. But when you take into account that every point on the LSAT gets you closer to scholarships and to better schools where graduates make A LOT more money, even a four or five-point jump can translate into tens of thousands of dollars over just a few years. From that perspective a thousand dollar class, where the average increase is 10-12 points, can be one of the best investments you've ever made.
To get a better sense of exactly
how good of an investment a class can be, check out this article on score vs. salary:
http://www.powerscore.com/lsat/help/salary.cfm
I know it's a lot to think about, and a forum post like this can hardly do justice to the gravity and complexity of this decision, so if you'd ever like to discuss it further give us a call at 800-545-1750 and we'll happily help you make the choice that's best for you.
Thanks!
JD