Revolution Prep, a Los Angeles provider of test preparation software and services, said late Monday that it raised $15 million in its first institutional financing round, which was lead by a London private equity firm.

Founded in 2002 by Ramit Varma and Jake Neuberg, the company provides SAT and ACT courses, private tutoring and K-12 software. The growth round was led by Kennet Partners, which has offices in Redwood City. Javier Rojas of Kennet will join the company’s board.

“We are impressed with the high success rate the company has achieved increasing high school graduation rates as well as its disruptive approach to the SAT Prep and tutoring markets,” Rojas said in a statement. “We believe that education will dramatically change this decade with technology-enabled assessment-based learning leading the path.”

Inc. magazine recently recognized Revolution Prep as the fastest growing private education company in the Los Angeles area, and ranked it No.14 in the education sector of its annual Inc. 5000 list.