Hi again, and thanks so much for your patience.
I do apologize; I was not online very much, yesterday, due to internet connection problems.
I've been researching this for you, and while it's difficult to find any information online regarding the differences between admission requirements for UP and the Wharton School, I did find a good resource for you, on the following webpage; look at the right hand side for 'Admissions Tip of the Day'. http://www.admissions.upenn.edu/
They do encourage parents and grandparents to contact the Alumni Admissions Resource Center with any questions about the admissions process. The phone number is: (NNN) NNN-NNNN(this is for UP, but I'm sure they can direct you to the appropriate office of Wharton, if they are not able to answer your question).
I'm assuming you have already seen the following webpage, that states that UP (Wharton) students will be notified of admission decisions via email on March 30, since you mentioned this. I got to this page from the main Wharton page and clicked 'My Admissions', but the information seems to apply to both UP and Wharton. https://f5-portal-or.isc-seo.upenn.edu/portal/page?_pageid=37,18043&_dad=portal&_schema=PORTAL
Have your grandson sign in on this page to see if there is any news. He should have received his username and password XXXXX his application was received.
There is a phone number at the bottom of the page to call if you have questions, and I still believe this will be the best way to find out any additional information, if you're concerned and do not want to wait until March 30th for the email. (NNN) NNN-NNNNbr/>
It's been my experience that they will provide a specific date as the 'latest date' students will receive acceptance notification, but some are sent out before this date, and that's probably why your grandson's friend already heard. Also, as you know, if your grandson's friend applied to UP and your grandson applied to Wharton, the acceptance notifications may go out on a different schedule.
I hope your grandson receives some good news in the very near future and wish him much good luck in his educational endeavors!