This week, 4 Diversified Consumer Services stocks are worse, according to the Portfolio Graderdatabase. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

This week, Bright Horizons Family Solutions, Inc.’s (BFAM) rating worsens to a D from the company’s C rating a week ago. Bright Horizons Family Solutions, Inc. provides child care and early education services as well as other services designed to help employers and families better address the challenges of work and life. For more information, get Portfolio Grader’s complete analysis of BFAM stock.

China Distance Education Holdings Ltd. Sponsored ADR (DL) experiences a ratings drop this week, going from last week’s C to a D. China Distance Education Holdings Ltd. Sponsored ADR provides online and offline education services, and sells related products in the People’’s Republic of China. For more information, get Portfolio Grader’s complete analysis of DL stock.

Chegg, Inc. (CHGG) slips from a C to a D this week. The company also gets F’s in sales growth, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of CHGG stock.

ATA, Inc. Sponsored ADR (ATAI) gets weaker ratings this week as last week’s D drops to a F. ATA, Inc. Sponsored ADR offers services for the creation and delivery of computer-based tests based on its proprietary testing technologies and test delivery platform. The company also gets F’s in earnings momentum. For more information, get Portfolio Grader’s complete analysis of ATAI 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.