If you are looking to go to grad school you will need to sit your GRE beforehand. If you are not planning to go to grad school then there is no real need to take the GRE test.
The average GRE math score of students who have taken the exam is around 150.
If you want to attend graduate school, you will most likely need to take the GRE. To get the best score possible on your GRE, you should purchase a book that has several GRE practice questions. The best GRE practice questions are questions that have been taken from actual tests. You may want to find a complete GRE practice test that you can complete under the same time restraints that you will face during the real examination.
Of course you can find some different gre classes that can be taken online. Here is a site that has a lot more information regarding these classes and how you can take one. www.princetonreview.com/grad/gre-online-courses.aspx -
I would not take any days specifically preparing for the GRE- you have spent you whole life up that time preparing-- a few more days won't do much.
You should start to prepare the GRE as soon as you are planning to get into graduate school, at least in your junior year, starting from GRE vocabulary as it will take sometime to learn all the GRE words normally from several months to one year.
You should take the GRE for Fall 2018 admissions in the summer or early fall of 2017.
GRE is taken by those who wish to pursue Master's studies. The prerequisite is to have a Graduate degree. Note:Check with your program first to make sure that they require the GRE.Source: http://bostonreview.in/gre/
You should take the GRE when you have prepared adequately for the exam and feel confident in your abilities. It is also important to consider application deadlines for the programs you are interested in.
You can get a sample GRE test online at http://www.ets.org/gre/general/prepare/sample_questions/. These questions should help you learn what the actual test will be like and what will be expected of you.
There are many websites online that offer GRE practice tests, but many are not legitimate tests. For the best GRE practice tests, one should look into the Princeton Review. http://www.princetonreview.com/grad/free-gre-practice-test.aspx
If the GRE is optional for your program of interest, you should consider whether taking it will strengthen your application. Some programs may still value a good GRE score, so it could be beneficial to take it if you believe it will enhance your chances of admission.
If the GRE is optional for the programs you are applying to, consider factors such as your strengths, weaknesses, and the competitiveness of your application. Taking the GRE can potentially strengthen your application, but it is not always necessary if you have strong alternative qualifications.