Just to expand on what Feenie is suggesting.
HT can decide when to issue reports but the statutory guidance is that they have to give parents the opportunity to discuss these reports with teachers (i.e. you can't issue them on last day of school year and not allow parents opportunity to talk to teachers/ you can't issue SATs scores prior to thresholds being released on July 9th - which has been an issue we've been heatedly discussing elsewhere on MN & in real life here, where our school is attempting to do so & we've reported them to LEA).
You haven't 'expanded' on my point, you've dived in and authoritatively posted a load of rubbish again.
Regulation 6 of The Education (Pupil Information) (England) Regulations 2005 does indeed require headteachers to:
... make arrangements to enable the recipient of the report to discuss its content with the pupil?s teacher, if he so wishes.
But up to date advice is that there is actually no time requirement as you suggest - that advice has been removed.
There is now no statutory time period a school must allow for parents to respond to a report. A school does not have to arrange for a discussion of the contents of a report to take place within any set period of time.
Although schools are expected to meet the requirement to arrange a discussion reasonably promptly, they should manage the timing of this themselves.
Schools may even do this after the summer, if they want to.
I have no idea why they would - but the assertion of a statutory time limit is totally erroneous.