The following day, the teacher informed her that her biscuits violated the school's policy on sweet treats.
"She said it was 'policy that homemade goods aren't encouraged unless there was enough to share with everyone,'" the mum said, as reported by The Sun.
If the biscuits had been bought in a store, that would have been fine.
"She just kept saying it was policy and that the parent committee runs the policies so I'd need to take it up with them," the mum added.
Facebook users were outraged by the school's policy on home baking.
"This is absolutely ridiculous! Why are they shutting down a parent supplying a child with decent food? As a teacher I am constantly battling the opposite way, I can't imagine discouraging home baked goods. Keep fighting the good fight," someone commented.