Take the Leadnomics challenge: How much paper can you donate to schools?

It’s a battle to see which company can donate the most stacks of paper to Philadelphia schools.

Leadnomics, the University City lead generation company, launched its #StackThatPaper challenge last week in an effort to help Philly schools, which opened this week amid an $81 million budget shortfall.

“As an Internet company we only use five reams of paper a month,” Leadnomics cofounder Zach Robbins said in a statement. “By donating some of our stockpile, we can clear out cabinet space and put that paper to good use: into the hands of teachers all over the city.”

Companies, schools and volunteers can sign up here.

The campaign will go on until the beginning of October, said Robbins.

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#StackThatPaper reminds us of mobile startup Artisan raising $2,000 last fall for Philly schools by matching donations made by its employees.