What do I do if my computing teacher does not teach the subject properly?
All of that is in the key-stage 3 syllabus (it is not all programming). However it may be that the teacher is over focused on one bit.
What is in the new computing syllabus
The new computing syllabus (post ICT), consists of three parts: Computer science, IT, and digital literacy. The timetabling people often make up name, so not wise to get to hung up about it.
You can download the syllabuses, here are some resources:

https://www.computingatschool.org.uk/data/uploads/ComputingCurric.pdf
https://www.computingatschool.org.uk/data/uploads/cas_secondary.pdf
https://www.computingatschool.org.uk/data/quick_start_secondary/progression_path.pdf

Where does copyright fit in
Within digital literacy there is a small section on, aspects of the law and ethics: copyright, patent, trademark, computer misuse, privacy, plagiarism sharing is caring, free software, etc; internet safety; evaluating resources (e.g. Wikipedia articles).
Copyright is a small part of the syllabus. Here is where copyright is mentioned (indirectly):
“They need to be aware of their legal and ethical responsibilities” — page 15 of https://www.computingatschool.org.uk/data/uploads/cas_secondary.pdf and “Explains and justifies how the use of technology impacts on society, from the perspective of social, economical, political, legal, ethical and moral issues” — last column grey section of https://www.computingatschool.org.uk/data/quick_start_secondary/progression_path.pdf
What to do next
Check to see if you teacher is only teaching part of the syllabus, then consider helping by sharing some of the resources below.
There are also a lot of teaching resources, here are a few.

https://csunplugged.org/en/
https://helloworld.raspberrypi.org/