TBS and A&E have drawn failing grades from an activist group for their programming, reports EW.com’s Inside TV blog.

According to the Gay & Lesbian Alliance Against Defamation’s annual "network responsibility index," which tracks the quantity and quality of gay, lesbian and transgender roles on TV, A&E and TBS were at the bottom of the rankings among cable networks.

The most inclusive cable network was ABC Family, which earned an "excellent" rating, while Showtime, TNT, HBO, AMC and Syfy all earned "good" ratings.

Among broadcasters, The CW, Fox and ABC earned "good" ratings, while NBC and CBS earned "adequate" assessments, the story notes.