While taking prep courses when you are seniors is one way to improve your score, another better approach is to improve your vocabulary and writing throughout college. This is described below our description for immediate preparation.

Preparing for GRE's now:

If you plan to take the GRE's in the next year, then you need to take advantage of all the material available and practice. The webpage above had links to sample questions (graded interactively online) as well as sample exams and suggestions for approaching the various sections. To view some of the materials you will have to download the adobe reader which is explained on webpage.

It should be noted that the analytical writing section expects that you are prepared for it ahead of time. You should read the description of what is required in the two essays (Issue and Arguement) and practice with the sample topics. This way when you get to the exam you know what is being asked and can focus on the topic you've been assigned. See here for the directions and sample topics.

It is very difficult to build vocabulary and grammer right before an exam. However, familiarizing yourself with the format and reading the suggested approaches to the problems can be a big help. See here.

Your best preparation for the GREs is to get the most out of college:

Some suggestions based on my experiences when I was in college:

• Do all the required reading in your college courses and aim for an A in every subject. I've always had a tendancy sometimes to think of myself as a math/science person who isn't especially good at the liberal arts. However when I got a scholaship that required a 3.5 average, I discovered I could master any subject with enough effort. On the other hand, if a course feels like an easy A: don't just aim for the A, ask the professor for extra reading.
• Read one New York Times article per day. The New York Times is particularly recommended because it uses a lot of advanced vocabulary and grammar. It is also a newspaper with diverse topics from science to real estate and local news.
• Read books and magazines for fun on the subway or bus. Some of my favorite novels are: "The Caves of Steel", "Dragonflight", "A Tree Grows in Brooklyn", "Watership Down", "Ender's Game", "The Mists of Avalon", "The Girl with a Pearl Earring", "The Lord of the Rings", and "The Name of the Rose". Some good books of poems are "Poet in New York", "Leaves of Grass", "American Smooth" and "The Art of Drowning". Some magezines are "Scientific American" and "National Geographic".
• Write down words you aren't familiar with when you are reading and look them up later whether or not you need them to understand what you were reading. If you don't understand something look up the meaning right away. It is a good idea to look up the word in an English dictionary in addition to a bilingual dictionary. Make a point of using these words in sentances.
• Spend extra time on your writing intensive courses, rewriting your work after its been graded and going over it a second time with your professor. Most faculty will appreciate the extra effort. Make a point of stretching your vocabulary as your write by looking up synonyms in a thesaurus that will mix up the words you are using. Graded writing is your opportunity to test whether you are using new words correctly.
• When writing emails to friends make a point of using correct grammar even if you don't want to test your vocabulary on each other. Make friends with English majors and do stretch your vocabulary when communicating with them. You'll be suprised how quickly your vocabulary and grammar improves just by hanging out with people. Of course, some of your old friends may resent your new attitude but you can switch back easily enough when talking to them if you wish. I myself did this particularly when communicating with my relatives.
• Keep in mind that speaking and writing in English well is not betraying your culture. It is adding to your culture and enabling you to communicate with educated people around the world. Mathematicians and scientists from all countries use formal English to communicate with one another. When I speak with them, I am extra careful not to use my native New York grammar and vocabulary because it is too regional and they cannot comprehend what I am saying.