There are tons of teacher discounts out there.
Specifically for Disney trips and/or resorts, welll there is the Swan/Dolphin deal , the YES program and I have seen some programs for FL teachers.
In Non - Disney world news, there are discounts available.
1) NY & Company--show your ID and get 15% off
2) Staples Rewards-- sign up for a Staples Teacher Rewards
3) Goodwill (may be local)
There are other discount programs and I can think of those later or others can add to it.