Original sentence: By recent statistics, institutes like Harvard and MIT even at the graduate level have an acceptance rate of about 1 in 8, while the JEE has acceptance rates of as low as 1 in 50.Given the importance attached to the JEE by students all over India, the IITs follow a rigorous procedure when conducting it every year.Many educationalists consider the JEE to be one of the toughest undergraduate entrance exam in the world.People have remarked that despite the constant pressure and scrutiny of the JEE, it is remarkable how the IITs have maintained an autonomous stronghold on the system to keep it clean and beyond doubt
Edited sentence: According to many educationalists, it is considered to be perhaps the toughest undergraduate entrance exam in the world.By recent statistics, institutes like Harvard and MIT even at the graduate level have an acceptance rate of about 1 in 8, while the JEE has acceptance rates of as low as 1 in 50, simply due to the large number of students that apply.Given the importance attached to the JEE by students all over India, the IITs follow a rigorous procedure in conducting it every year.With the constant pressure and scrutiny of the JEE, it is remarkable how the IITs have maintained an autonomous stronghold on the system, thus keeping it clean and beyond doubt