As a cover sheet to your document, an executive summary need not go into ANY mention of how you conducted your analysis and/or what you're basing your conclusion on. Instead, begin with a concise statement of the conclusion you reached after conducting your analysis and/or research is the paper that will be attached. For example, after a comparison of what other schools like CSU do about personal calls for faculty, you conclude that the CSU is charging for calls most other institutions do not.
How you word the conclusion will differ depending on your audience and what they care most about. The following examples illustrate how the wording must change given an audience's needs.
Colorado State should discontinue the practice of charging faculty for personal calls.
This is a good example if the people you work for are only interested in this issue. It begins with a summary of conclusions regarding only the CSU population.
Because I have found that over 75% of comparable institutions do not charge for personal calls, I have concluded that our faculty is justified in objecting to this practice which should be seen as a "perk" for our faculty.
This sentence provides unnecessary information about other institutions and/or why the faculty think they deserve to have these calls paid for. Your readers can get that information from the report. Further, the use of "I" is unnecessary since your readers already know who wrote the report.