Simplify the following text for a Grade 15 native English-speaking person.
Original: The university has also been highly influential in America 's history of aviation , and Purdue 's aviation technology and aeronautical engineering programs remain among the highest rated and most competitive in the world .
Simplified: The university has been highly influential in America 's history of aviation , and Purdue 's aviation technology and aeronautical engineering programs remain among the highest rated and most competitive in the world .