Hutt Valley High School students to protest against Ministry 'inaction' as mould discovery forces return to remote learning 2 May, 2021 03:14 AM 5 minutes to read A block of classrooms was closed following the discovery of mould in late March. Photo / Supplied A block of classrooms was closed following the discovery of mould in late March. Photo / Supplied Students forced to return to half-remote learning following the discovery of toxic mould at their high school plan to protest against the "inaction" of the Ministry of Education. In late March the discovery of "unsafe levels of mould" in a block of classrooms at Hutt Valley High School prompted further air testing of the building, while students took lessons in the hall and library.