I teach Early Childhood Special Education for a public school. Can I still deduct as a teacher even though my students are not yet in Kindergarten?

Unfortunately, you cannot claim the Educator expenses deduction as you are not an eligible educator.

This is the IRS definition of an eligible educator:

You're an eligible educator if, for the tax year you're a kindergarten through grade 12 teacher, instructor, counselor, principal or aide for at least 900 hours a school year in a school that provides elementary or secondary education as determined under state law.