Sorry, forgot to add the post that I found just now with some info. This might help explain a bit (not my words or post - copied and pasted with permission):
Did you know they're going to give each child a number at birth and use that to track them through their education, monitoring their attendance in real time?
They're going to share that data, which is personally identifiable, with a board of different agencies that includes the police and social services? That they're going to hold that data about your children for 66 years after they finish schooling? That there is no opt out clause or consent required for this to happen?
Did you know that 5 ex secretary of state for educations have come out to say this is a blatant power grab from the current secretary of state? That the bill will give power to change practically anything about education to the SoS without parliamentary scrutiny, such that if he/she decided that school would now be mandatory on Saturdays there's nothing anyone can do about it?
Did you know that the bill gives Ofsted the powers to enter any private home? A power that currently only the police and social services have, if they have paperwork to support them?
Did you know that the bill means any school can be forced to become an academy, regardless of the wishes of the head or governors?
Did you know that schools are being considered as "corporate parents" for every child (a phrase usually reserved for those who care for children removed from their families)? That the school, not the parent, will have the authority to decide if the child is fit to attend a setting (ie well enough to attend school, in terms of either mental or physical health), rather than the parents?
Did you know that nearly half of children with special educational needs are wrongly referred to social services? Often because their behaviour is complex or attendance difficulties. This looks set to get worse.
Did you know that you can get put in prison if your child can't go to school? That there are hundreds of parents - mostly mothers - in prison right now because they couldn't get their teenager into school? How does that help their child? This bill tightens the screws on attendance even more, and the more you tighten the screws, the more people cry out in pain.
This bill has implications for everyone. It's so badly and quickly written, that the DfE who wrote the bill have already proposed 16 amendments. It withdraws authority from every parent and gives it to the State and we'll never get it back.