Teachers can use Workbench's technology platform to develop hands-on lessons that teach subjects such as math in an interactive way.
For example, students could learn about fractions and multiplication by programming a robot and measuring whether he moves twice as far or half the distance. Making a recipe book could teach students about measurement conversions.
Sleat said the program is used in 10,000 schools around the world.
Brown Advisory, which has offices in Baltimore, was attracted to Workbench because of the company's fast growth and promising software platform, said Keith Stone, a private equity analyst with the firm.
"We were just really impressed with how quickly they were able to sign schools up," Stone said. "We were just excited by the progress they were making."
The new funding will allow the company to further expand its reach, Sleat said.
"The message of the product is very solid," Sleat said. "Now we need to tell the story more.
Workbench employs 14 people at its office in City Garage. The company expects to add four more workers by the end of the year and could hire another six next year, once it raises another, larger funding round, Sleat said.