Selectivity of Colleges Attended by Matriculated Students?

The two charts below show the percent of Andover High School graduates who attended selective colleges based on the assessment of The College Board of the degree of selectivity of each college and university.

The College Board categorizes each college into five categories: Open admissions, less selective, somewhat selective, very selective and most selective. Each year the Guidance Department tracks the colleges and universities our graduates attend. Below are two charts of the degree of selectivity of those colleges and universities for the past ten years. The dashed line in each of the charts shows the trend over time.
 
In the case of students who attend colleges that are very or most selective and in the case of students who attend colleges that are somewhat, very or most selective, the trend line shows that AHS graduates are more often accepted to and attending more selective colleges.
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