The Herts County Council website seems not to be coping with snow traffic (surprise!). The above link will take you straight to school closures.
(Thanks to Lib Dem county website: www.sixtofix.co.uk)

http://www.imodus.com/summary.aspx?company=99

Weather update 30 November 2010 for Batchwood and Marshalswick secondary schools.

STAGS:
“wear warm clothes and sensible footwear”

Townsend:
School OPEN but make personal risk assessment before sending your child to school and if attending be prepared to collect your child early if the weather deteriorates during the day.