The grades of seven media stocks are on the rise this week on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

This week, Knology (KNOL) is showing good progress as the company’s rating jumps from a B (“buy”) last week to an A (“strong buy”). Knology is a fully integrated provider of video, voice and advanced communications services to residential customers in the southeastern United States. In Portfolio Grader’s specific subcategories of Equity and Margin Growth, KNOL also gets A’s. For more information, get Portfolio Grader’s complete analysis of KNOL stock.

This week, Dex One (DEXO) is showing significant improvement as the company’s rating hops from a C (“hold”) to a B (“buy”). Dex One is a marketing solutions company that offers various solutions to promote businesses on the Internet through its proprietary search engine marketing product, DexNet. For more information, get Portfolio Grader’s complete analysis of DEXO stock.

This is a strong week for John Wiley & Sons, Inc. Class A (JW.A). The company’s rating climbs to B from the previous week’s C. John Wiley & Sons publishes print and electronic products. Shares of JW.A have increased 6.8% over the past month, better than the 1.7% decrease the S&P 500 has seen over the same period of time. Shares of the stock have been trading at an exceptionally rapid pace, up 406.8% from the week prior. For more information, get Portfolio Grader’s complete analysis of JW.A stock.

Outdoor Channel Holdings (OUTD) boosts its rating from a C to a B this week. Outdoor Channel Holdings is the principal owner of The Outdoor Channel, a national television network. For more information, get Portfolio Grader’s complete analysis of OUTD stock.

Value Line, Inc.’s (VALU) ratings are looking better this week, moving up to an A from last week’s B. Value Line produces investment-related periodical publications and provides investment management services. Shares of the stock have been changing hands at an unusually rapid pace, twice the rate of the week prior. For more information, get Portfolio Grader’s complete analysis of VALU stock.

This week, A. H. Belo Corporation Class A’s (AHC) ratings are up from a C last week to a B. A. H. Belo operates as a newspaper publishing, and local news and information company primarily in the United States. Wall Street has pushed the stock higher by 7.5% over the past month. Shares of the stock have been trading at an exceptionally rapid pace, up twofold from the week prior. For more information, get Portfolio Grader’s complete analysis of AHC stock.

The rating of Rentrak Corporation (RENT) moves up this week, rising from a B to an A. Rentrak is an information management company serving the media, entertainment, retail, advertising and manufacturing industries. Wall Street seems to agree with the upgrade and has propelled the stock up 6.1% over the past month. Shares of the stock have been changing hands at an unusually rapid pace, up 2887.5% from the week prior. For more information, get Portfolio Grader’s complete analysis of RENT stock.

Louis Navellier’s proprietary Portfolio Grader stock ranking system assesses roughly 5,000 companies every week based on a number of fundamental and quantitative measures. Stocks are given a letter grade based on their results — with A being “strong buy,” and F being “strong sell.” Explore the tool here.