<p>Just as there is no formula for entry to JHU, I am not aware of any formula for revoking acceptance. Thus, you won't know until JHU decides one way or the other. </p>
<p>I would suggest you do as follows:
First, verify that there is no way in the world that you cannot get those grades raised. Talk to your teachers and ask if you can do any additional work, etc.</p>
<p>Second, if there is no way to get the grades raised, I would suggest you consider summer school and re-take the courses. Why would I suggest this? If JHU sees that you recognize a problem and are trying to fit it, JHU may be more impressed than if you just did nothing. If JHU revokes your admittance, you will be in better shape when approaching other schools. </p>
<p>Third, if summer school is not an option, how about local community college? Does your local community college have a similar course?</p>
<p>Fourth, be honest in dealing with JHU. It is not like this is the first time JHU has seen your situation. If you lie about what happened, I suspect they will figure it out.</p>
<p>Fifth, don't apologize or beg for foregiveness. If you made mistakes (e.g. slacking off) admit it, express regret, and state your reasons why you believe you will do well at JHU.</p>
<p>Sixth, have you talked to your coach yet? Sure your coach will be mad, but your coach may have some insight. I doubt your coach will have any pull at this point, but coach's wisdom could be invaluable (after the coach stops yelling of course).</p>
<p>Seventh, you can worry yourself to death over this but it won't change anything. Do the best you can to fix whatever you have within your control and whatever happens happens. You have talents, skills, etc. and you will have a good life even if JHU revokes your admittance.</p>