No you cannot change the heading on your tax forms.
If you are a W-2 employee your job-related expenses are not deductible on your federal return. Are you working as an independent contractor for a school (or school district, etc.) ? I am asking that because you are posting from online Self-Employed software.
https://ttlc.intuit.com/questions/4482873-which-federal-tax-deductions-have-been-suspended-by-tax-re...
https://www.irs.gov/taxtopics/tc458
TEACHER EXPENSES
Go to Federal>Deductions and Credits>Employment Expenses>Teacher (Educator) Expenses
https://www.irs.gov/taxtopics/tc458
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**