I received 1099 for work as a student intern. What business code do I use on Schedule C?

[lilylysle]

I was paid $2,000 for a remote internship with a non profit institution.  I am a full time student.  What is the business code for the 1099 I received?

[Patrice]

Here is the link for the Schedule C instructions.  The principal business codes are listed on pages C17-C18.

http://www.irs.gov/pub/irs-pdf/i1040sc.pdf

Note that if your business can’t be classified, enter 999999 as the principal business code.