Centre director Nualnoi Treerat said the survey indicated that of those who intend to bet on the football tournament 21% would bet directly with bookies, 16% via a website and 12% through a middleman.
The centre surveyed 3,050 students from high schools and vocational schools during May 30 to June 8 in eight provinces -- Bangkok, Nonthaburi, Pathum Thani, Samut Prakan, Chiang Mai, Khon Kaen, Songkhla and Chon Buri.
He said, however, that 21% of respondents said they were still not certain whether they would bet on the games or not.
About half of the students surveyed thought it appropriate to bet with friends, without money changing hands, while 21% said cash wagers would add colour to the matches, and 20% said it was better to bet via a website.
Ms Nualnoi said students whose teachers, parents or friends were already into gambling tended to bet during the tournament, more than those who were surrounded by non-gamblers.
The study also found that first-time gamblers on football results were younger than a decade ago, now starting at ages eight to 14. In the past, gamblers were more often working people.