A boy carried books to school in a microwave after his school banned bags.
Jacob Ford - a sixth former at Spalding Grammar School - staged a silent protest by using a wicker basket and a microwave to carry books after the school banned bags for health and safety reasons.
His mother, Tracy, said: ''I think Jacob's protest has been very peaceful and I believe he should have his say.
At the end of the day, I believe in freedom of speech and so I'm very proud of him for standing up for something he believes in. Microwave or no microwave.''
The school imposed the ban after stating that 'injury was being caused to younger students' because of 'ever-larger bags' being carried on their shoulders. Now, pupils are being encouraged to carry books by hand between lessons.
Spalding Grammar suspended Jacob, 17, after he refused to hand over his mobile phone - which he was using to contact his mother.
Headteacher Steven Wilkinson told Spalding Today:''The facts that have been presented are far from the full picture.
We have a student who has behaved in an increasingly inappropriate way, actions the likes of which I have never witnessed, and who has been sanctioned entirely in line with the school's policies.
''What disappoints me most is the fact that, rather than working with us, the parent concerned has encouraged and is now seeking to glorify her son's behaviour.''
Bridget Allan, who has two children at the school, commented: ''I was outraged when I heard about the ban. I think it is ridiculous.
How can you even get to places on time with all the right books, let alone do things like sanitary towels. This is something all of the girls and female teachers are talking about.''