I'd pay the $17/month to replace a kid's wages if they went to school.
How would you get the funds to them without them being stolen?
So for $35/month you could pay the kid to go school and provide books
Then they'd be educated and without a job, because the economy is so screwed up there.
You may remember that communist Eastern Europe and the former Soviet Union compared favorably with Western Europe and the United States in years of schooling attained, yet per capita incomes in those countries were substantially lower.
You can't "aid" your way out of an inherent problem with politics and governance.
Here is what the Index of Economic Freedom has to say about the DRC:
"Economic development in the Democratic Republic of Congo (DRC) has been severely undermined by decades of instability and violence. Poor economic management worsened by repeated political crises has constrained economic freedom and driven much of the population into persistent poverty. The government's inability to provide even basic public goods reliably further limits economic opportunity.
Entrepreneurial activity is curtailed by an uncertain regulatory environment and the absence of institutional support for or facilitation of private-sector development. Arbitrary taxation, poor infrastructure, marginal enforcement of property rights, and the weak rule of law have driven many people and enterprises into the informal sector, which accounts for more than 80 percent of economic activity."