If we want it to change then educators have to start actually doing something when they see warning signs.
If a child is identified as being 'behind' or as 'having issues' then the school/nursery should have to call in the parent(s) and do whatever seems necessary. If that ultimately means calling SS because the parents adopt ostrich position or are clearly just neglectful then so be it!
I speak from experience. Children are being left behind and 'falling through the cracks' too often.
How can a child miss a minimum of 8 weeks of the school year every year for 3 years and not have the parent(s) called into question??
How can that same child barely register on the SAT's scale (even then they read it out to him) at year 3 and yet the school reports all say 'he's progressing well'. WHAT?
The head of the school in this case actually admitted that until a child is absent over 85% of the time they don't flag it as an issue and added that because 'he's a nice, quiet, non-disruptive boy' they weren't that concerned and besides RP said "No" to any help and intervention for son.
In this example the NRP gets chance to educate child for a period. Nothing wrong with child. Tests show more than capable and reading goes from Janet and John to Roald Dahl in one term. Writing is progressing. Has a bedtime, now eats everything (not just pasta and finger food). Uses utensils efficiently. Different child all round-blossoms.
Original RP snatches child back.
Can NRP go to court for custody on the basis that they were snatched and their son was and now is again, being neglected educationally and developmentally?
NO. It doesn't count. He's fed, watered and RP isn't a threat to him physically so we don't want to disrupt him again.
Besides culturally he's better with RP. 
NRP fights for years for the best for son. School says we 'can only do so much' if RP doesn't back it up. Reports all say 'no homework', 'no kit', 'must read more', 'writing poor', 'needs support at home'.
NRP fights an expensive losing legal battle and no outside agency willing to help them help their son. "Not 'at risk' not interested".
Result? Year 8 with SAT's that read Year 4, low social skills, a weight problem and a blurry line between reality and fiction.
Congratulations school and the legal system! He won't have 'slipped through the cracks unnoticed' you've all stood around and watched, while holding NRP back 