English Other Education / Pedagogy Abbreviations of Departments in the Garden City High (Kansas)

Hello.

I am translating a transcript from the Garden City High (Kansas) containing a number of ab-breviations whose meanings I don’t know.

Any help will be highly appreciated.

The abbreviations correspond to the names of some Departments in that School:

NT (??)
IE (course taught: Plumbing)
SP (course taught: Interpersonal Communications)
DP (course taught: Introduction to Computers)
CW (course taught: Writing Assessment) [Composition & Writing??]
G (course taught: Supervisory Management)
C (course taught: Income Tax; Accounting)
I (course taught: Guided Semester for Resident Aides)
A (course taught: The Mathematics of Finance; Current Business Problems)

THANKS FOR YOUR HELP,

Manuel
----------