| Business | Phone |
| Cardinal Statistical Conslnts 6039 Harkson Dr, East Lansing 48823 | (517) 575-0765 |
| Transsystech 4970 Northwind Dr, East Lansing 48823 | (517) 337-1500 |
| C & E Communications 909 Abbott Rd, East Lansing 48823 | (517) 339-9160 |
| Kaplan Test Preparation 333 Albert Ave 214, East Lansing 48823 | (517) 332-2539 |