Simplify the following text for a Grade 9 native English-speaking person.
Original: Ohio State is also the only public university in Ohio to which the Carnegie Foundation for the Advancement of Teaching has given both its highest overall classification of Doctoral\/Very High Research Activity and highest undergraduate admissions classification of more selective .
Simplified: Undergraduate admissions to Ohio State are said to be `` more selective '' by US News & World Report . It is the most selective public university in Ohio , and it is the hardest university in Ohio to get into .