Northwestern ED

My son has a 3.82 GPA, has taken 11 AP classes, 34 in ACT,1530 in SAT,
Varsity tennis captain in one of the top tennis schools in the state,Model UN secretary,
Learned classical Indian music for 12 years and has given a concert
Other extracurricular activities
National merit semifinalist
He has written a very good essay(common)
What are the chances of getting into NOrthwestern thro ED?

You can search for forums where ED results in previous years were reported to see who got in and who did not. A couple of other factors:

Is he in top 10% of his class?

Doe he have subject test results or AP exam results (that are good and will be reported?)

I think he will have a very solid shot at ED, but he will need a compelling “Why Northwestern?” essay