Anne Mahan found Sumdog Maths and Spelling:

• Does not significantly reduce teacher workload“teaching students user name and password. most websites we use are connected to Google (uploaded rosters)”
• Slightly improves teaching efficiency
• Slightly improves attainment“Unsure since I serve the entire student body. I use Sumdog to enforce tech standards.”
• Moderately builds student knowledge“revisits concepts outside of the classroom and is not chronologically aligned to curriculum”