Northwestern. By far.
Ohio State
The largest Big Ten schools by enrollment are typically the University of Michigan, Ohio State University, and Purdue University. The University of Michigan has one of the highest enrollments, often exceeding 45,000 students. Ohio State University also has a large student body, with numbers around 60,000. Purdue University rounds out the top three, with enrollment figures close to 50,000.
no
PSU
indiana
Michigan
purdue
Rutgers and Maryland will both be joining the league in 2014.
Illinois
Reading Senior High School located in Reading,PA
Indiana University per school name rotation.
As of my last knowledge update, the most expensive Big Ten school in terms of tuition and fees is Northwestern University. Located in Evanston, Illinois, Northwestern is a private institution, and its tuition tends to be higher compared to the public universities in the Big Ten. For the most accurate and up-to-date tuition costs, it's recommended to check the universities' official websites or recent reports.