Princes Trust courses and child tax credits

[crepeyneck]

DD 17 left school a few days ago as she hated new school. She is returning to her old school to start A levels in Sept.

She has got a place on a Princes Trust course for 12 weeks. I phoned tax credits and housing benefit and neither accept princes trust courses. I am very worried as I cannot afford to lose HB or child tax credits.

Any advice?