Hardest IET classes at Purdue

Ranked by average GPA from official grade distributions. Only courses with at least 100 graded students.

1. IET 43630: Design of Experiments Average GPA 2.20, 167 students
2. IET 31600: Statistical Quality Control Average GPA 2.24, 297 students
3. IET 43540: Facilities Planning Average GPA 2.38, 103 students
4. IET 33620: Total Productive Maintenance Average GPA 2.56, 131 students
5. IET 33400: Economics Analysis - Tech Sys Average GPA 2.86, 1,094 students
6. IET 23500: Systems Thinking & Proc Imprv Average GPA 3.00, 129 students
7. IET 43640: Lean Six Sigma Average GPA 3.02, 246 students
8. IET 33520: Human Factors for Tech Sys Average GPA 3.24, 130 students
9. IET 43530: Operations Planning & Mgmt Average GPA 3.25, 162 students
10. IET 21400: Intro Supply Chain Mgmt Tech Average GPA 3.47, 710 students
11. IET 34350: B2b Sales Management Average GPA 3.51, 104 students
12. IET 34200: Warehouse & Inventory Mgmt Average GPA 3.53, 192 students
13. IET 34300: Technical and Service Selling Average GPA 3.62, 220 students
14. IET 31300: Tech Innov & Integration: Aidc Average GPA 3.78, 317 students

See also: Easiest classes, Purdue course catalog, IET course catalog.