Who's Who scholarhips are a sort of scam. The students who apply for the scholarships are funding the scholarships through "processing fees." A while back, I posted information from the IRS form 990 for the non-profit portion of Who's Who which administers the scholarships. The "processing fees" paid by students applying for the scholarships were far more than the costs to administer the scholarships. In fact, the fees were so much more that they funded nearly all the scholarships.
If something costs, it probably is a scam, even if the cost is fairly small and called a "processing fee." In case anyone is wondering, the Who's Who scholarship processing fees are in addition to anything parents pay for having their child's picture in a book or purchasing the book. The picture and book fees are paid to the for-profit portion of Who's Who.