Malaman makaranta ‘yan kwantaragi a jamhuriyar Nijar, sun fara yajin aikin kwanaki biyu daga yau Llitinin, da nufin tada hukumomi daga barci game da wasu tarin matsalolin da suke hana tafiyar da ayyukan karantarwa, lamarin da tuni ya fara daga hankulan kungiyar iyaye.