I think we should continue this entertaining thread (created by the site administration) until it is locked again.
American schools are very bad at teaching math and even English. It is understandable that immigrant parents from the countries with better schools turn to academic enrichment to compensate. Not all afterschool programs are geared towards teaching to the test.
My former schoolmate who is now professor at Berkley got so desperate that he translated our Geometry textbook published in the 50ties into English. In his blog he lamented how bad American math textbooks are and compared pages from CA textbook with the similar pages from Singapore Math to show that what is being taught here is not math.
Now if you believe that some prep is necessary before taking SAT then why not send your child to a hagwon where they know how to prep as opposed to some American chain that hires random people and gears towards average students. For example my son went to hagwon for 6 months and told me that thanks to their classes he finally understood English grammar (even though he was attending an IB program in one of the best public magnet high schools in the country).
So instead of bashing Asians maybe we should look closer at what they are doing well and take advantage when possible.