Google Classroom
Google's learning platform for creating, distributing, and grading assignments.
Also available as an app: 

Purple Mash login page
A whole curricular, online resource.

My Child At School login page
Anytime access to timetables, attendance, behaviour, assessment and student reports, letters or important documents.
Click here for parent guides
Also available as an app: 

Times Tables Rock Stars login page
A maths programme for learning times tables (multiplication and division).

Coventry City Council - Schools and schooling
School term dates, admissions, contact details, free school meals, uniform support, etc.