Except that's not progress, it's simply not putting the child's educational needs first, and ensuring their educational arrangements are in line with systems (including unschooling!) that will work for the child.
Chopping and changing in a way that knowingly damages the child's education is not in the best interests, and it's incumbent on the parent to ensure whatever they are doing is organized around the child's educational needs.
Traveling children with a Green Card are engaged in literal cultural learning that cannot be provided other than within the community and hands on experiance at specific times and places.
Private schools are able to cater to individual tailored plans to allow individual children time away without long term damage to their school based learning, partly because of staff numbers and dedicated educational pastoral care.
On line schools are able to cater for children trailing working parents abroad and indeed any parent seeking something more flexible, but not in a bricks and mortar placement. Their nature, means work can be undertaken at any hour, any where.
State schools are geared to a specific way of mass pile it high, lower teacher numbers, and pastoral care being less educational and more personal, and generally aren't geared up to be able to provide for time off without damage to the educational plans, any more.
I'm all for flexibility and home ed (we are a home ed family) but this was fought for by the genuine home ed community for specific reasons, mainly to do with actual well being, and stopping LEA's and schools plundering funding that no longer belonged to them, and was being applied for on behalf of their children.
Pupil Registration Regulations new changes: August 19, 2024
School Attendance (Pupil Registration) (England) Regulations 2024.
Parents must give reasonable written notice of intent and a set date of removal.
A school must delete a pupil's name from the admission register when receiving written notification from the parent or guardian that the child will receive education otherwise than at school and "that day has passed".
The law doesn't explicitly state deletion must occur the next school day, but are on shaky legal ground if they do not remove the child's name from the roll once the specified "last day" of attendance has passed. (assuming no SEN stuff, or School Attendance Orders)
The law does not provide for any ten day period or cooling off period, precisely because it would contradict the legal grounds for deletion off the roll.
IANAL. I am a parent who went to court to stop the school keeping a DC's name illegally on roll so they could keep getting the child's AWPthat they where not entitled to.