Every school handles auditing differently, but I've done some research to get you started. It looks like Butler has the easiest process in place (and the best bargain).
- Butler University: You must apply to the Audit for Enrichment program and provide transcripts of previous academic work. Cost is $100 per credit hour.
- IUPUI: Open to enrolled students only. Audit requests must be approved by course instructors, and full tuition is charged.
- Marian College: You must complete an application for audit, which is available at the admissions office, and get approval from the professor. Fee is $140 per credit hour.
- University of Indianapolis: Visit the School of Adult Learning for an application to the Lifelong Learning College. Half tuition is charged, so you'll pay about $150 per credit hour for evening classes.