I am really not sure how many more times I can answer this question. I have answered it on CC before, I have answered it on the Hopkins Forums, and I even answered it on the Hopkins Insider blog numerous times:
Hopkins Insider: New Year Hodgepodge
"Is my application complete? Can I check my status online? Do you have my stuff? Or any of the other ways to ask such questions.
We do not have an online system for checking application status, nor do we confirm application materials through email. All applicants will be mailed an acknowledgment postcard (they are blue) after your application is received AND PROCESSED. This indicates your application file has been opened (not necessarily that it is complete). It can take up to 4-6 weeks for these postcards to be sent and received (more for international mailing addresses).
In late February, once we have processed all received application materials, we will contact students whose applications remain incomplete. Those students will be given an opportunity to provide us with any missing items before we complete the evaluation of their applications. Rest assured that application files are checked carefully for completeness."
THERE IS NO JHU ONLINE SYSTEM FOR CHECKING APPLICATION STATUS -- THERE ARE NO IDS THAT ARE SENT OUT -- AND WE DO NOT RELEASE DECISIONS ONLINE.