Seats
The number of students taking this examination has increased substantially each year with the JEE-2006 registering about 300,000 candidates (the number of exam-takers in each of the previous five years was under 200,000). The number of seats available in total is about 5500, indicating a selectivity of about 1 in 50. The break-up of seats for 2005 and 2006 is:
| Institute | Intake (2005) | Intake (2006) | Intake (2007) |
| IIT Bombay | 574 | 574 | 574 |
| IIT Delhi | 553 | 553 | 553 |
| IIT Guwahati | 302 | 365 | 365 |
| IIT Kanpur | 555 | 555 | 541 |
| IIT Kharagpur | 779 | 895 | 874 |
| IIT Madras | 550 | 520 | 540 |
| IIT Roorkee | 577 | 616 | 746 |
| Total (IIT's) | 3890 | 4078 | |
| IT-BHU | 643 | 708 | 686 |
| ISM Dhanbad | 402 | 658 | 658 |
| TOTAL | 4935 | 5444 | |
The age limit for appearing in IIT-JEE is 25 years. For candidates belonging to SC, ST and PD categories, the relaxed age limit is 30 years. Also, starting 2007, a candidate can take the JEE two times at the most. This has been done mainly to reduce stress on students and discourage the concept of "cram schools" ? where students are made to memorize all types of possible exam questions. Furthermore, from 2007 onwards, students who are selected for admission to an IIT cannot attempt the examination again in the future.