MOST NOTEWORTHY: Corinthian Colleges, MSC Industrial and HBOS Plc were today's noteworthy downgrades:

• Piper downgraded shares of Corinthian Colleges (NASDAQ: COCO) to Neutral from Buy as they expect the company to face difficulty maintaining Title IV lending at its high default rate schools.
  
• Jefferies downgraded shares of MSC Industrial (NYSE: MSM) to Hold from Buy on valuation, as there is not enough upside to their $50 target to maintain a Buy rating
  
• Credit Suisse lowered HBOS Plc (OTC: HBOOY) to Underperform from Neutral to reflect the weakening housing and mortgage environment.

OTHER DOWNGRADES:

• Salesforce.com (NYSE: CRM) was cut to Market Perform from Outperform at Bernstein.
  
• B. Riley lowered Iomega (NYSE: IOM) to Neutral from Buy.
  
• Goldman downgraded Bare Escentuals (NASDAQ: BARE) and Procter & Gamble (NYSE: PG) to Neutral from Buy and Kimberly-Clark Corp. (NYSE: KMB) to Sell from Neutral.

MOST NOTEWORTHY: Teva Pharma, Novavax, Corinthian Colleges, Fair Isaac and Tenneco were today's noteworthy upgrades:

• Friedman Billings upgraded Teva Pharmaceutical (NASDAQ: TEVA) to Outperform from Market Perform following Teva's better-than-expected Q3 report and guidance.
  
• Oppenheimer upgraded shares of Novavax (NASDAQ: NVAX) to Buy from Neutral based on positive expectations for Ph I/IIa pandemic influenza data, the start of clinical trials for seasonal influenza, and expected announcement of a vaccine product candidate in Q4.
  
• Corinthian Colleges (NASDAQ: COCO) was upgraded to Buy from Neutral at Merrill following its better-than-expected Q1 report and guidance.
  
• Citigroup upgraded of Fair Isaac (NYSE: FIC) to Buy from Hold shares to reflect the company's strong Q4 results and improved outlook.
  
• Tenneco (NYSE: TEN) was raised to Outperform from Market Perform at Wachovia based on valuation and revenue opportunities in commercial truck market.

OTHER UPGRADES:

• Energizer Holdings (NYSE: ENR) was upgraded at Bear Stearns to Peer Perform from Underperform.
  
• Key Banc upgraded Post Properties (NYSE: PPS) to Hold from Underweight.
  
• Morgan Stanley upgraded MetroPCS (NYSE: PCS) to Overweight from Equal Weight.
  
• William Blair upgraded LECG Corporation (NASDAQ: XPRT) to Market Perform from Underperform.

MOST NOTEWORTHY: Heelys (HLYS), Audible (ADBL) and Response Genetics (RGDX) were today's most noteworthy initiations:

• Baird believes Heelys (NYSE: HLYS) is poised to report strong results through FY07, which is not reflected in current valuation, and started shares with an Outperform rating and $47 target.

• JMP Securities believes a growing number of consumers will opt to acquire books and physical CD audio books digitally over the internet and started shares of Audible (NASDAQ: ADBL) with an Outperform rating and $12.50 target.

• Caris believes Response Genetics' (NASDAQ: RGDX) diagnostics opportunity may represent a significant long-term growth driver and initiated shares with a Buy rating and $7.50 target...

OTHER INITIATIONS:

• JP Morgan initiated DeVry (NYSE: DV), Corinthian Colleges (NASDAQ: COCO) and Strayer Education (NASDAQ: STRA) with Overweight ratings, ITT Educational Service (NYSE: ESI), Apollo Group (NASDAQ: APOL) and Career Education (NASDAQ: CECO) with Neutral ratings and Universal Technical Institute (NYSE: UTI) with an Underweight rating.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).

MOST NOTEWORTHY: Weyerhaeuser Co (WY), Jackson Hewitt Tax Service Inc (JTX), Hewlett-Packard Co (HPQ) and Coldwater Creek Inc (CWTR) were some of today's more noteworthy upgrades:

• UBS upgraded shares of Weyerhaeuser Co (NYSE: WY) to Neutral from Reduce citing the stock's recent weakness.

• Morgan Stanley upgraded shares of Jackson Hewitt Tax Service (NYSE: JTX) to Equal Weight from Underweight on valuation as the firm believes yesterday's sell-off was overdone.

• Hewlett-Packard Co (NYSE: HPQ) was upgraded to buy from Neutral at American Technology on valuation.

• Coldwater Creek (NASDAQ: CWTR) was upgraded to Buy from Neutral at Bank of America based on the company's favorable risk/reward.

OTHER UPGRADES:

• BB&T upgraded shares of Pacer International, Inc (NASDAQ: PACR) to Buy from Hold citing the company's operational changes and new $100M shares' repurchase.

• Goldman upgraded Spherion Corp (NYSE: SFN) to Neutral from Sell.

• SkyWest, Inc (NASDAQ: SKYW) was upgraded to Neutral from Underweight at Prudential.

• Bear Stearns upgraded shares of Sonic Corp (NASDAQ: SONC) to Outperform from Peer Perform on expectations of an acceleration in partner drive-in same store sales and system wide unit expansion.

• Citigroup upgraded Corinthian Colleges, Inc (NASDAQ: COCO) to Buy from Hold after a company visit as the firm believes expectations are finally low enough and recent initiatives are taking hold. Further, Citigroup believes takeover speculation will limit downside as their analysis suggests an LBO could work.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).

After peaking at $98 a share in June 2004, Apollo Group' s stock has headed straight downhill and now trades at about $41.

After a great bull run that began in 1995, the industry began to mature and these stocks rolled over.

We blogged earlier today about how Pequot Capital's chief, Art Samberg, likes cotton. He also is looking for a turnaround in publicly traded education stocks. The stocks he likes are Apollo Group (NASDAQ: APOL), Career Education (NASDAQ: CECO) and Corinthian Colleges (NASDAQ: COCO).

Apollo has been putting a lot of money into its on-line community college program, Axia College, which it hopes can accelerate Apollo's growth rate. Management is hopeful Axia will be a feeding tube for its four-year on-line college, University of Phoenix.

Samberg also believes Career Education, which has been a real bloodbath, could be ripe for a turnaround under new management.

Publicly traded education stocks, as an industry, have stayed away from using leveraged balance sheets. Samberg notes that if current valuation persists and if fundamentals start improving, private equity firms could find these companies very attractive.