At George Washington High School the ratio of graduating seniors that go on to college as compared those who do not is 7 4 Last year 28 students went How large was graduatin?

Let C be the number of graduating seniors who go on to college, and N be the number of graduating seniors who do not go on to college.

The ratio of graduating seniors that go on to college to those who do not is 7:4. This can be written as:

C/N = 7/4

Last year, 28 students went to college, so C = 28. We can substitute this into the ratio:

28/N = 7/4

To solve for N, we can cross-multiply:

28 * 4 = 7 * N

112 = 7N

N = 112 / 7

N = 16

So, 16 students did not go to college.

The total number of graduating seniors is the sum of those who went to college and those who did not:

Total = C + N = 28 + 16 = 44

Therefore, the graduating class size was $\boxed{44}$.