I would be grateful that there are restrictions to prevent students from making poor choices in classes. @Undercrackers has it right - why set up your kid for failure? The rules are not there to be arbitrary but to provide some sanity to course selection.
A classmate of my daughter’s failed the first semester of APUSH - and surprisingly to all of us, was allowed to take the second semester of APUSH - which, you guessed it, she failed as well. So summer school US history was on the docket for her. I wish the counselor had stepped in and prevented that second semester failure as well.