Mean ACT Composite and High School Percientile Class Rank for New Freshmen Enrolled Fall 1996 - Fall 2005
| 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | |
|---|---|---|---|---|---|---|---|---|---|---|
| Mean NIU ACT Composite |
21.7 | 22.1 | 21.8 | 21.9 | 22.0 | 22.0 | 22.1 | 22.0 | 22.0 | 22.1 |
| Mean National ACT Composite |
20.9 | 21.0 | 21.0 | 21.0 | 21.0 | 21.0 | 20.8 | 20.8 | 20.9 | 20.9 |
| Mean High School Percentile Class Rank |
64.7 | 66.5 | 65.7 | 65.8 | 63.5 | 63.6 | 64.3 | 63.7 | 64.5 | 61.9 |
| Percent in: | ||||||||||
| Top 10% of HS Class | 10.9 | 12.1 | 11.0 | 12.0 | 10.0 | 10.5 | 10.9 | 9.9 | 9.5 | 8.9 |
| Top 25% of HS Class | 35.6 | 37.4 | 35.6 | 35.6 | 32.9 | 35.2 | 33.7 | 34.6 | 35.4 | 31.2 |
| Top 50% of HS Class | 77.6 | 80.3 | 79.1 | 78.3 | 74.5 | 74.2 | 76.2 | 75.2 | 75.8 | 71.4 |