ranked the "stickiest" at-home web site by Nielsen/Net Ratings. Dohring sold the Neopets site to Viacom's MTV Network in June 2005 for $160 million. At the time, approximately 140 million Neopets had been created, and Neopets ranked among the top 10 stickiest Web sites, with advertising making up about 60% of the company's revenues and a line of plush toys sold through Target Corporation and other stores. Age of Learning, Inc. and ABCmouse.com After the sale of Neopets to Viacom in 2005, Dohring founded Age of Learning, Inc., in 2007, and launched the ABCmouse.com Early Learning Academy, website in 2010. The Wall Street Journal reported that ABCmouse was "designed to teach basic reading, math, science and other subjects to children between the ages of two and six." At Age of Learning, Dohring assembled an education advisory board that collaborates on the design of the ABCmouse curriculum and includes Kimberly Oliver Burnim, National Teacher of the Year in 2006, and Kevin O'Donnell, creator of PBS series, Liberty's Kids. Unlike Neopets, which relied on advertising, ABCmouse.com charges a subscription of $12.99 per month or $59.99 per year, and is free to individual teachers, libraries, Head Start programs, and other community organizations. Research has shown ABCmouse "helped to accelerate students' learning gains in literacy and mathematics skills on multiple assessments." In 2016, Age of Learning launched ABCmouse for Schools, a solution aimed at school districts and groups rather than families or individual teachers. ABCmouse for Schools includes student management, professional development, curriculum alignment, and progress reporting tools in addition to the core ABCmouse curriculum. Age of Learning, a privately held company, was reported to have reached a $1 billion valuation based on $150 million in funding from ICONIQ Capital in May 2016. A subsequent round of funding in June, 2021, led by TPG, raised another $300 million, which valued the company at $3 billion. In January 2017, Age of Learning expanded the ABCmouse curriculum through 2nd grade. In November 2018, the company launched a digital library and literacy platform, called ReadingIQ, which offers thousands of books for children ages 2 through 12. ReadingIQ is available to families at a monthly or annual fee and is free for teachers. In January 2021, Age of Learning partnered with the Florida House of Representatives to give all Florida families free access to the ReadingIQ digital library as part of a statewide literacy initiative. Age of Learning