TOEFL has four sections: reading, listening, speaking and writing. Each section carries a maximum of 30 marks and the’ total marks’ is 120. Most of the universities have a requirement listed as 79 or 80 however in practice, it’s recommended that you score 90 or above. The speaking section is the most important part for the students seeking assistantship from the university. A minimum score of 24 is recommended and 26+ is preferred in order to get an assistantship. Scoring 24 is not a big deal. You need to practice a little though. You may take the help of Barron’s, Princeton’s and Kaplan’s guide. The Barron’s CD is the most effective way to prepare for the TOEFL test.
TOEFL is not very much important in the admission decision however it certainly plays a role in assistantship decision. A score of less than 90 may hamper your chances of getting an assistantship. Hence you should be well prepared for the exam before you appear for it. It’s a good idea to write TOEFL shortly after you write your GRE. More information over TOEFL test may be found at http://www.ets.org/portal/site/ets/.
Again you can find lots of free materials available over internet for TOEFL preparation with the help of GOOGLE.