KS3 assessment with marking grid feedback for electromagnets topic

This assessment questions is designed for students to complete independently.
I usually set this for homework.
The question covers several parts of the electromagnets topic.
I use the marking grid to provide students with specific feedback including WWW and EBI.
I tick the marking grid where students have achieved the mark.
The EBI comment is based on the marking grid where students use the missing information to improve their answer.
In the NS (next step) section I write a different question based on the topic to stretch and challenge the students.
There is a SPAG section which can help improve students SPAG.
This makes marking specific to the students and provides consistency.
I have found using this marking grid saves time.
Student feedback has been very positive.