As far as I'm concenred, we need to totally revamp our education system.
Do you know why we have long summer holidays? Because when universal compulsory educaiton was first introduced, kids had to help their parents on the farm.
Do you know why we have long winter breaks? Because many lived in the countryside and with all the snow couldn't make it to school, not to mention no heating in school.
March break? Religious.
Most families are now made upf of two working parent. So while the parents are working, they're wasting their time having their kids babysat. The kids are bored, unchallenged, and wasting their time. I'd say scrap the holidays, switch to a 6-day school week, and just guarantee that kids and teachers can have their religious holidays off; those could be reserved as either review days, test days, sports days or something of the sort, I'm sure schools cold work aroud religious holidays.
If we did it that way, kids could have completed their compulsory education (i.e. secondary school graduation) and have a diploma in some trade or profession by the age of 15. If we should reform our second-language acquisition policy as Italy has, we could create a fluently bilingual population to boot, all knowing one common language, thus saving money in translation and interpretation costs in the long term, which could then be redirected towards education.
This would allow kids to enter the workforce soon after their 15th birthday, thus giving them a headstart in life. Parent have to pay for babysitters anyway, so might as well pay a little more and give them a good educaiton during the holidays.