Standardized test prep company BenchPrep raised $6 million in funding from Menlo Park-based New Enterprise Associates and Revolution Ventures, according to an SEC filing Friday. BenchPrep operates on a cross-platform model, which involves licensing textbooks from major publishers and converting them into interactive experiences.

In January, the company expanded its offerings beyond college test prep to include courses and practice tests covering everything from high school to military certifications to law school. BenchPrep released a diagnostic tool that identifies students' weaknesses at the same time. Last fall, USA Today rated BenchPrep 3.5/4.

As of January, BenchPrep had 200,000 users, 7,000 of whom had paid accounts, according to TechCrunch. This recent round of funding builds on the $1 million BenchPrep raised last year from Lightbank.