Updating education details - which date?

[Astrid]

Been online and noticed the site keeps on advising me that DD2 is not listed as going to school, which she is correct, she is going next year.

I went in the education section to advise that she is enrolled full time for next year. It asked for date. What date should this be? 1 Jan 2014, start of calender year, or 30 Jan 2014 when school lets the students attend?

Also how important is this info? I know it is currently connected to School kids bonus, which I have no idea if it will still be around for next year anyway. Is there anything else is affects?

Thanks

ETA: next year, not next week