::::::I didn't say the Locust Valley IBDP was invalid. I said that according to ObserverNY, the information they provide on their website is inaccurate (there is no such thing as a "certificate programme.") There is no way we can prove that what ObserverNY is saying is true about their statistical reports. 
 ::::::Since "pre-university" applies to all high school courses, then a word such as "challenging, demanding or rigorous" should be used as a modifier of the phrase "pre-university" to distinguish the IBDP from less difficult HS courses.  I'd be happy to provide sources that describe the IBDP in a similar fashion.  In fact, I am sure they are already used in the article. 
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