Would this possible schedule change affect my admission status in any way?
Yes, senior schedule changes may impact the review of one's final high school transcript and may result in the rescinding of one's admission.
As far as senior year schedule changes for admitted Early Decision students it is not something that is recommended by the Admissions Committee. It is important to note that that admission to Johns Hopkins for all admitted applicants is contingent on the successful completion of high school and the review of an enrolling student's final transcripts. This final transcript review is not only a review of a student's continued academic performance in their senior year (grades) but also a review that a student continued to pursue rigorous coursework after admission and did not drop courses. There are no set rules to the review of post-matriculation transcript as each and every situation is taken on a case-by-case basis. Every year though a handful of students have their admission rescinded for poor grades, a decline in the rigor of their schedule, disciplinary actions, and/or providing false information in their application.
This being stated, we do understand that senior year schedule changes are sometimes necessary. We will respect the decision for students to change their senior year schedule for such reasons as scheduling conflicts, the cancellation of a course, or exchanging one course for a similarly rigorous course. It is the policy of Johns Hopkins University to not comment on a student's course selection throughout high school, and specifically about what courses a student should or should not take. This policy extends to student's requesting advice about senior schedules, and whether to drop or add classes mid-year. We are unable to offer specific advice for individual students. There is no way to predict whether a student's admission will be rescinded as it takes a complete review of their work after their admission.
In the end, if ones make a schedule change, your application must be updated. Any notification of a change to a student’s senior schedule must be sent as an updated transcript by one’s high school guidance counselor. The updated transcript should contain an explanation for the change in the schedule by both the counselor and the student.