Share 'Get Publicity By Motivating Kids In Schools By Giving Them A Copy Of Your Autographed Book.'

Is this a good way to gain publicity? I gave out a copy of my book to those non-performing students in school when they actually shown improvement by being motivated to get my book. I could do this because I work in a school. Have anyone done this before? Please advise me. Thanks. Yours Sincerely Sean Toh