The Toronto District School Board is considering whether to allow TV ads in up to 70 of its schools, starting this month.

The board is set to vote Wednesday on whether to expand a controversial pilot program that has been running in four schools over the past year.

In exchange for granting Onestop Media Group the rights to advertise, the board gets $1,300 for each school that participates, as well as LCD screens and related equipment.

Students also get some access to the digital screens, allowing them to share video content they've generated.

But the program has met with criticism by some school board trustees.

"I think kids see enough ads," Chris Glover said Tuesday afternoon. "They watch TV, they're exposed to ads on the Internet. I really don't think that we need them in our schools."

While some trustees have no problem with allowing the ads, Glover said, others disagree with the business end of the deal.

"What we're doing is selling access to students, to the advertisers," he told CTV News Channel. "If we were to do that, then the argument is made, should we not be selling it to the highest bidders? Should we put out a tender for this kind of contract?"

Depending on the size of the school, Glover said the money earned from installing the screens could be less than a dollar per student, annually.

"It's not going to do a whole lot."

School board trustees are due to vote on the matter Wednesday evening at a regular meeting.

If it's approved, "the digital sign program" would expand to between 50 and 70 schools starting this month, with an option to add another 20 schools in 2012. It would continue for seven years, with an option to extend it for another three years.

The advertising company behind the program, Onestop Media, has also set up digital displays at TTC subway stations.

Although only "non-commercial sponsors" are allowed to advertise under the terms of the deal, Glover said commercial entities such as MuchMusic are also using the screens.

Central Commerce Collegiate, Central Technical School, Harbord Collegiate and Heydon Park Secondary are the four schools involved in the pilot project. Each has been fitted with four LCD screens.