The grades of 3 IT Services stocks are better this week, according to the Portfolio Grader database. Every one of these stocks has an “A” (“strong buy”) or “B” overall (“buy”) rating.

This week, ExlService Holdings, Inc.’s (EXLS) ratings are up from a B last week to a A. ExlService Holdings, Inc. provides offshore business process outsourcing solutions, primarily serving the needs of Global 1000 companies in the banking, financial services and insurance area. The company also gets A’s in operating margin growth and earnings growth. For more information, get Portfolio Grader’s complete analysis of EXLS stock.

This week, Convergys Corporation (CVG) pushes up from a C to a B rating. Convergys Corporation provides customer management business process outsourcing solutions for communications, financial services, technology, and other vertical markets in North America and internationally. The company also gets A’s in free cash flow. For more information, get Portfolio Grader’s complete analysis of CVG stock.

WPCS International Incorporated (WPCS) shows solid improvement this week. The company’s rating rises from a C to a B. WPCS International Incorporated is a project engineering company that focuses on the implementation requirements of specialty communication systems, wireless fidelity deployment and fixed wireless deployment. For more information, get Portfolio Grader’s complete analysis of WPCS 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.