This week, three Service stocks are improving their overall rating on Portfolio Grader. Each of these rates an “A” (“strong buy”) or “B” overall (“buy”).

This week, China Distance Education (NYSE:DL) is showing good progress as the company’s rating jumps from a B (“buy”) last week to an A (“strong buy”). China Distance Education provides online and offline education services, and sells related products in the People’s Republic of China. In Portfolio Grader’s specific subcategories of Earnings Growth and Sales Growth, DL also gets A’s. For more information, get Portfolio Grader’s complete analysis of DL stock.

Grand Canyon Education (NASDAQ:LOPE) is making progress this week as its rating of C (“hold”) from last week increases to a B (“buy”) rating this week. Grand Canyon Education provides online post-secondary education services. For more information, get Portfolio Grader’s complete analysis of LOPE stock.

Stewart Enterprises (NASDAQ:STEI) boosts its rating from a C to a B this week. Stewart Enterprises provides a range of funeral merchandise and services, along with cemetery property, merchandise and services, either at the time of need and on a pre-need basis. For more information, get Portfolio Grader’s complete analysis of STEI 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.