The Unit A contract (teachers, specialists) gives members the right to apply, and be interviewed, for jobs inside the system.  Postings are here.  What follows is the contract language and instructions on how to apply for internally posted positions.

Promotions. All qualified professional employees will be given adequate opportunity to

apply for any positions normally considered to be above their rank and status. An adequate

opportunity to apply for such promotion means that during the school year the entire

professional staff shall be promptly notified in writing (or via e-mail) that a vacancy exists

and that any professional employee applying for promotion shall be given full opportunity

to interview by persons designated by the Superintendent. The notice shall contain a job

description of the vacancy. 

Instructions for viewing job posting