There are several reasons that you can be stuck on Step 3:
(1) Your fingerprints need to be verified. Please contact HRCServiceCenter@schools.nyc.gov
(2) I-9 Verification: You must send I-9 verification to HRCServiceCenter@schools.nyc.gov in order for the 'Application Forms' portion of this step to read complete. Note that it typically takes 7-10 days for the I-9 to be processed
(3) Incomplete Paperwork: All paperwork in the applicant gateway must move from the Forms requiring action section to the forms submitted section. Occassionally you have to re-open and re-submit paperwork for it to move over. This includes: I-9, Background Questionnaire, Emergency Contact form, and any other documents that you might have