Dr Siepel teaches at the undergraduate, postgraduate and MBA levels.

He convenes postgraduate modules, including "Risk Management" "Entrepreneurial Finance" and "Strategic Management."  He convenes the undergraduate modules "Strategy" and "Innovation Management".  In the past he has taught modules in "Information Systems".  

He convenes the module "Strategy and Leadership" on the Sussex MBA.

He regularly supervises MSc students and currently has four PhD students.