TOEFL exam is to evaluate English proficiency of students whose native language is not English. TOEFL exam is compulsary if you are planning to study in the US, Canada, Europe, and a few schools in UK. The Educational Testing Service (ETS) conduct the TOEFL exam.
TOEFL is conducted everyday, throughout the year, (except on holidays and weekends - Saturdays and Sundays).  TOEFL score is valid for two years.  In India the test is administered by

Prometric Testing (P) Ltd.
Senior Plaza 160-A, Gautam Nagar
Yusuf Sarai, Behind Indian Oil Building
New Delhi 110 049.
TEL : 011- 26512114/26531442
Fax: 265229741

Test Fees: US$ 130 * (Includes fee for reporting scores to 4 universities).
Additional Score Report: US$ 15* approx Rs.720/-* per university.

Test Registration:
Mode of registration: There are 3 ways to register for TOEFL. You can download test form along with the bulletin from www.ets.org

Registering by Phone: You may call up Prometric office to register. Make sure to call at least THREE BUSINESS DAYS before the test date.

Registering by Fax: If registering by fax, you must send your fax at lest SEVEN DAYS prior to your first choice of a test day.

Registering by Mail/Courier: Fill in the form, get the draft made (if you are not paying by credit card), and submit these to the Prometric office either by hand or by registered post/courier. You must send the documents at least THREE WEEKS before your choice of a test day.

On receipt of your documents, an appointment will be scheduled for you to test at the Prometric Center. Confirmation of the date, time and location of the appointment will be sent to you. If you do not receive confirmation at least THREE business days before your first choice of test day, please call the Prometric office to verify your appointment.