Out of 150 college-bound students, you believe that exactly 0 had a 4 out of 5 in both math and English?
We are not talking about generalities or averages here. The article makes the extraordinary claim of "exactly 0." This is simply an extraordinary claim. Like saying nobody is over 6 feet tall in an American city of a population of 500,000. I mean sure, the average could be lower - but not one?
Since you seem to know a bit more about Baltimore, could you expand on the reason for this extraordinary fact?
Maybe it is a statistical anomaly based on the total number of high schools and middle schools, that 6 should happen not to have any students with an over 4 in math and English. Plus I note that they say math and English. Perhaps if they said "math or English" they would have.
So it definitely seems a bit fishy to me.